SoberBreath gives you a breath alcohol reading for personal reference only. It is not a legal or medical measurement, and it does not determine whether you are fit to drive — only a police-approved evidential device can do that. If you have been drinking, the safe choice is not to drive.

Wait at least 20 minutes after your last drink. Alcohol takes roughly that long to be absorbed into the blood, and residual alcohol in the mouth needs the same time to clear. Avoid eating or smoking for 20 minutes beforehand, leave 3 minutes between tests, and take two or three readings for a more reliable picture.

No. BreathKey runs on two 1.5V AAA alkaline batteries, so there is no cable and nothing to plug in. When the LCD starts to flicker, the batteries are running low and it is time to replace them.

It measures 95 × 36 × 18 mm and has an integrated keyring loop, so it sits alongside your car keys without weighing the bunch down.

All orders ship within 48 hours of order confirmation, and you will receive an email with your tracking number once yours is on the way. Standard shipping then takes 5–12 working days depending on your location. Delivery times can vary slightly during peak seasons or due to weather.

All orders ship within 48 hours of order confirmation. You'll receive an email with your tracking number once your order has been shipped.

Standard shipping takes 5–12 working days depending on your location. We work with reliable shipping partners to ensure your order arrives safely and securely. Delivery times may vary slightly during peak seasons.

We offer a 30-day return policy. If you are not satisfied with your purchase, you can return it within 30 days from the date you received your order for a refund.

• Sensor: advanced semiconductor oxide alcohol sensor

• Range: 0.00%–0.19% BAC (0.0–1.9 g/L)

• Power input: 2x1.5V "AAA" alkaline battery

• Operating time: warm up: 10s, response: <5s

• Dimension: 95 × 36 × 18 mm (3.7 × 1.4 × 0.7 in)

• Weight: 43 g (1.5 oz)