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"comes with a nice carry case to boot lol my only gripe is that it would have been good if it came with rechargeable batteries but hey ho i guess you can’t have everything lol ok i’ll stop waffling now"

"this is a complete waste of money!"

"00 reading the test is either faulty or fake but for the price i'd seriously avoid"

"i also think the product gives totally inaccurate readings"

"this device is very inaccurate and can give a completely different reading when used consecutively by the same person"

"feels cheap"

"this is a pointless gadget that gives you completely different reading every time i’ve done the test and it gave me a red light indicating over the limit then done the test 1 minute after and get a green light indicating fine to drive with zero alcohol reading"

"doesn’t work"

"he has to work weekends and is worried if he’s ok to drive the next day because he’s drank the night before so he buys disposable tests which can work out to be quite expensive after a while so i thought i’d buy him this so he didn’t have to"

"since my writing this review kungfuren has not only refunded my money but also sent me a replacement product at no cost"

"the count down also drops several seconds rapidly"

"there are instructions in english and instructions in german both are incomplete and confusing"

"this product takes away the guesswork which i not understand can be totally unreliable"

"great little gadget"

"i received this item and the lcd screen wont turn on looks as though it’s a damaged item"

"it’s very clear green your good to drive orange ur on limit and red is over limit"

"however some readings have been inconsistent"

"it is just a pity they did not respond like this when i first contacted them"

"as i've gotten older my friends live further away so this will be great to check myself after visiting!"

"not true the test"

"i know all the arguments but i feel it would be good to know that if i have just a drop more it could take me over the limit!"

"after much debate kungfuren finally agreed to send me the missing mouthpieces and said they would be with me in 15 days"

"completely made out of plastic it’s light and portable even though it isn’t exactly feeling sturdy"

"unfortunately the readings were unreliable and after following the manufacturer's instructions would only give a reading of 0"

"if you want to use this to see how pissed you and your mates get it's not as useful :"

"we are going on holiday to france this summer and it’s now a requirement to carry a breathalyser with you at all times in a vehicle i have checked the guidelines and believe that this is more than sufficient to make us law abiding"

"therefore i do not feel this product is safe"

"they also assure me they have greatly improved their customer service so problems like i experienced will not happen again"

"i don't drink and drive but there's been a few mornings after i've actually wanted to check i'm ok"

"i note that it is no longer amazon's choice as it was when i bought it"

"easy to use but results are really bad!"

"only thing i struggled with was working out what the 'limit' is on the chart as one side is in chinese and the other english"

"i received this item and the lcd screen wont turn on looks as though it’s a damaged item"

"quite disappointed though"

"the published numbers are not accurate and vary depending on my food consumption etc"

"my only gripe is that you have to buy the next model up at an extra £100 to be able to download the readings to a computer"

"very very confusing"

"anyway it's extremely accurate tested against my policeman mate's machine and really depressing"

"28 resolves the time stamp issue"

"bought this product after reading many other reviews on other similar products and choose it based on reviews written about this particular one although i thought it was a very pricey item i based that against the cost of losing my licence and jumped in"

"i bought this recently having previously owned a cheap alcohol tester that gave out very spurious readings that i didn't have a lot of confidence in"

"the one thing that did irritate me is the lack of blow tubes in the pack 5 is very stingy considering i've spent 150 quid 3 times what i did last time it's just annoying and a way of getting some more cash out of you"

"if you go for a cheap alternative then i would say you’re putting yourself at risk trusting something unreliable and so potentially misleading puts you in a worse position overall"

"only annoying thing is that it is more 'bulky' than my old one and i now have to find a suitable case!"

"for me it’s a morning after double check and emphatically not a tool to take it to the limit before getting in the car"

"years ago i tried a cheap no brand unit based on semiconductor technology that told me i was under the limit despite clearly being in a state where i wouldn’t trust myself with anything more dangerous than a butter knife… anyway this unit offers a decent sized fuel cell sensor the ability to vary the limit for different jurisdictions and an annual at a reasonable cost calibration service"

"if you go for a cheap alternative then i would say you’re putting yourself at risk trusting something unreliable and so potentially misleading puts you in a worse position overall"

"one can set the limit to whatever one choses and as i work in an industry with zero tolerance to alcohol it's reassuring to know that one is clear first thing in the morning"

"don't waste your money on cheap units as the whole point is accuracy and prevention of problems"

"may not be the lowest priced fuel cell device but also not the most expensive so good value for what it is"

"what scared us was that he felt fine and had driven into work on numerous occasions before"

"if you go for a cheap alternative then i would say you’re putting yourself at risk trusting something unreliable and so potentially misleading puts you in a worse position overall"

"can’t think of a single negative"

"the only criticism would be the ribbon cable that connects the two parts of the unit is a weak point in design and ultimately prone to failure having taken a broken unit apart to see what the poem was"

"when done the unit beeps and makes a click i assume the inlet blocking to prevent too large a sample and you read the results in your chosen units against a simple traffic light background"

"i still felt drunk the next day so didn't want to get in my car and spent the whole day walking everywhere"

"it also gives a time to zero estimate that turned out to be pretty much on the money for me"

"you cannot however breath in to the device during your night of drinking or certainly soon after finishing a drinking session as you could damage the device or it could give a false read so it is no good for knowing if you are under directly after you have had a couple of drinks etc all of this to be fair is explained and the logic behind it regarding the way the human body deals with processing alcohol so that is not a limitation to the device but more a limitation about our bodies"

"firstly do not buy cheap breathalysers unless you are just using them for fun they are worse than not using them at all the last thing you need is to be lulled into a false sense of security!"

"i've always worked on the principle being 6' 4" and 17 stones of 1 pint just about ok to drive 2 pints borderline so don't even think about it"

"don't waste your money on cheap units as the whole point is accuracy and prevention of problems"

"appears to be a quality product instructions suggest that you do not use for at least 90mins after drinking in order to get an accurate reading and that if you take a reading too soon you may damage sensor surely the whole point is to be able to take a reading shortly after having a few drinks otherwise"

"i don’t know because i have not been tested by the police and would rather not be"

"apparently the unit is designed to over read slightly as there is always a + margin of error so the displayed value is slid upward to ensure no under reads"

"i delayed my review so i could thoroughly test this breathalyser"

"firstly do not buy cheap breathalysers unless you are just using them for fun they are worse than not using them at all the last thing you need is to be lulled into a false sense of security!"

"made life worry free"

"bought this product after reading many other reviews on other similar products and choose it based on reviews written about this particular one although i thought it was a very pricey item i based that against the cost of losing my licence and jumped in"

"she was profoundly upset although she knew that people can have alcohol in their system the next day she assumed that was heavy drinkers"

"ordered the model down from this but was upgraded to the pro model at no extra expense have used this 12 times and very impressed blew into machine with 4 pints of lager and gave a very accurate reading not only that it tells how long you have to wait till sober or under the limit easy to use arrived"

"feels very soild and really like the blow display that was lacking on cheeper unist so you know your doing it right"

"years ago i tried a cheap no brand unit based on semiconductor technology that told me i was under the limit despite clearly being in a state where i wouldn’t trust myself with anything more dangerous than a butter knife… anyway this unit offers a decent sized fuel cell sensor the ability to vary the limit for different jurisdictions and an annual at a reasonable cost calibration service"

"love this machine friend of mine recently lost the license and it really put the shits up me i do like a glass of wine it usually stop drinking quite early say 9 pm could easily drink 2 bottles and on a weekend maybe a bit more feelingok the next day piss head yes i know need to cut that down ummed and arred for a couple of weeks"

"it just removes uncertainty!"

"you can update the software using a supplied usb cable although a required driver is not digitally signed so my computer refuses to install it"

"apparently the unit is designed to over read slightly as there is always a + margin of error so the displayed value is slid upward to ensure no under reads"

"it takes the uncertainty out of driving the morning after"

"bought this as i could no longer trust my ‘costco’ issue unit"

"there lies the problem"

"im more than happy with this product and wouldnt hesitate to recommend it especially for people who like a decent drink"

"there is absolutely no excuse for drink driving and with this you can know with confidence that you are beyond reproach in terms of alcohol"

"there is absolutely no excuse for drink driving and with this you can know with confidence that you are beyond reproach in terms of alcohol"

"for me it’s a morning after double check and emphatically not a tool to take it to the limit before getting in the car"

"this is essential in my opinion as i am undergoing problems with an employee with an alcohol problem"

"it is a british product having to comply to bs standards so i have more confidence in it than i would in a product from china or the far east"

"have notified the supplier expecting a response but no reply so have returned for a refund"

"a number of colleagues have lost their jobs due to this now if i still have alcohol in my system at 05:00 i can be a little late with few reprocussions"

"i had to contact alcosense with a small problem with the machine and the customer service was simply exceptional"

"has any one else had this problem"

"bought this as i could no longer trust my ‘costco’ issue unit"

"you can update the software using a supplied usb cable although a required driver is not digitally signed so my computer refuses to install it"

"you cannot however breath in to the device during your night of drinking or certainly soon after finishing a drinking session as you could damage the device or it could give a false read so it is no good for knowing if you are under directly after you have had a couple of drinks etc all of this to be fair is explained and the logic behind it regarding the way the human body deals with processing alcohol so that is not a limitation to the device but more a limitation about our bodies"

"only annoying thing is that it is more 'bulky' than my old one and i now have to find a suitable case!"

"the reading gives a blood alcohol value as well as a simple "red don't drive" "amber below legal limit" and "green low or no alcohol" indicator"

"i cannot genuinely comment on accuracy as i don't have a lab but the ease of use and interface is hands down better than all the cheaper units i've used as well as the older alcosense i owned which gave very little feedback on errors or mis reads"

"bought this after many write ups recommending this tester was happy with the product until we noticed that it ran out of calibration back in october surely they are not all like that"

"you cannot however breath in to the device during your night of drinking or certainly soon after finishing a drinking session as you could damage the device or it could give a false read so it is no good for knowing if you are under directly after you have had a couple of drinks etc all of this to be fair is explained and the logic behind it regarding the way the human body deals with processing alcohol so that is not a limitation to the device but more a limitation about our bodies"

"perfect for my needs i travel to a lot of festivals as you know sunday morning comes far to quick but i now know when i drive home i am legal and it may cost abit but not as much as the loss of you driving license"

"only quibble is the 'sober in' estimates seem to be off"

"i use it mostly as a morning after check but also if we go out for dinner and i have a glass or two of wine with a meal i check that i'm well under the limit: there is no excuse for driving under the influence"

"according to the specs it never under reads so if this tells you your ok to drive then you're ok"

"personally i only need it for the morning after as i’d never take the car out if i’m drinking so this gives me the piece of mind to just get on without having to worry about being stopped"

"i’ve had the cheaper ones and had no faith in them"

"slide the front panel up and insert a blow tube when "ready" appears blow into the tube a display guides you while you blow as to whether you are blowing too hard or too soft"

"i can slow my rate of intake to keep my reading safely below the limit"

"all publicans should have one to help their regular customers adjust their intake in order to enjoy the pub craic and be confident that they are legally below the limit"

"the one thing that did irritate me is the lack of blow tubes in the pack 5 is very stingy considering i've spent 150 quid 3 times what i did last time it's just annoying and a way of getting some more cash out of you"

"the only criticism would be the ribbon cable that connects the two parts of the unit is a weak point in design and ultimately prone to failure having taken a broken unit apart to see what the poem was"