BACtrack - S35 Portable Breathalyzer - White

Monitor your blood alcohol content with this BACtrack S35 BT-S35 portable breathalyzer, which features MicroCheck sensor technology for quick, accurate readings from 0.00% to 0.40%. The sleek design lets you carry it in a pocket or purse.

Protect your product

Learn about Replacement Plans
Protection Plan Options
Cardmember Offers
Our experts recommend

Item you're currently viewing

BACtrack - S35 Portable Breathalyzer - White - Angle
BACtrack - S35 Portable Breathalyzer - White
  • Item you're currently viewing
  • $49.99
Offer disclaimer


What's Included

  • 3 mouthpieces
  • BACtrack S35 Portable Breathalyzer

Ratings & Reviews

Overall Customer Rating:
50% of customers would recommend this product to a friend (1 out of 2)


MicroCheck sensor technology

Delivers accurate results in as little as 5 seconds.

3-digit LCD

Provides an easy-to-see reading.

Wide detection range

Measures blood alcohol content from 0.00% to 0.40%.

3 replaceable mouthpieces

Allows hygienic use among multiple users.

Sleek design

Fits into a pocket or purse for easy portability. Requires 2 AAA batteries (not included).

Customer rating

would recommend to a friend
  • Rating: 2 out of 5 stars

    Just O.K.

    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    It is affordable, but I cannot really tell if the measurements are accurate or if it is even really working. My fiance had 2 glasses of red wine and 30 minutes later I used the BACtrack breathalyzer to test her blood alcohol content and it read 0.01 both times. On another occasion I had 3 well drinks and tested myself about 45 min later and it only showed 0.02. So I am not sure if this device is accurate at all. Maybe I got a bad device, or I need to use better batteries. I just wouldn't recommend it from my short experience so far.

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    It seems to work

    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    Every time I play with this and have not had anything to drink - it always displays 0.00 If I have drinks it registers a number. I have not tested then compared with police findings and don't really want to attempt that test :-)

    I would recommend this to a friend

Product images, including color, may differ from actual product appearance.