It's always better to be safe than sorry. For a little while, Lifehacker readers can save $40 on a quality, pocket-sized breathalyzer. The BACtrack S35 is on sale for $29.99 โ€“ it's lowest price ever โ€“ down from $70.

Monitoring your BAC (Blood Alcohol Content) with a breathalyzer is a good way to stay in control when drinking. They can also help you avoid dangerous and costly scenarios like DUIs.

BACtrack displays your blood alcohol content in 5 seconds.

The BACtrack S35 is portable and discreet - it can easily fit in your pocket.

BACtrack normally retails for $70 โ€“ Lifehacker readers can get it for $29.99.

This breathalyzer ships free but is available in the US and Canada only. If you're interested, head over to StackSocial:

>> Get The BACtrack S35 Pocket Breathalyzer for $29.99 | 57% off | StackSocial

StackSocial curates exclusive deals on trending and innovative products. They've partnered with the commerce team to bring you these specials. So to be clear, this post is not editorial and we make money on sales.