Product details
Hlyjoon driver breath alcohol tester – portable LCD breathalyser
Quick snapshot of what this gadget does
A handy, pocket-sized breathalyser that lets you check breath alcohol quickly before you drive or while you’re out socialising. It’s small enough to hang on a keyring, so there’s no faffing about searching through a bag. The LCD gives a clear numeric readout, there’s an audible alarm if alcohol is detected, and the unit switches itself off automatically to save battery.
Features and specifications
- Advanced semiconductor oxide alcohol sensor – sensitive and fast to respond.
- Resolution: 0.01% BAC (0.1 g/l), good for comparing relative levels.
- Measurement range: 0.00–0.19% BAC (0.0–1.9 g/l) or 0.00–0.95 mg/l BRAC.
- Power: 2 x AAA alkaline batteries (not included) with automatic shut-down to preserve battery life.
- Includes 5 mouthpieces for hygienic shared use and a keychain-style compact body for easy carrying.
- Weight approx. 50 g, dimensions approx. 12 x 5 x 3 cm — genuinely pocket-friendly.
- Note: LCD has no backlight, so the screen is easiest to read in reasonable light.
How it helps in real life
Wondering whether it’s safe to drive after a couple of drinks? Pop on a mouthpiece, give a steady blow as instructed and read the result on the screen — quick reassurance without the guesswork. It’s perfect to keep in a coat pocket or glovebox for nights out, festivals or work events. Because it’s small and light, it’s also handy for occasional workplace checks or to keep in a bag when you’re travelling with friends.
Practical things to know before buying
- Batteries are not included, so have 2 AAA cells ready before first use.
- No backlight on the LCD means the screen is harder to read in dim light; use in daylight or a well-lit area.
- Semiconductor sensors are ideal for portability and quick checks but aren’t a substitute for the professional devices used by police; treat readings as indicative rather than legally definitive.
Typical situations where this makes life easier
- Checking fitness to drive after a social event or dinner.
- Quick workplace spot checks where a simple screening is needed.
- Keeping peace of mind on holiday or when travelling with friends.
All in all, the Hlyjoon keychain breathalyser is a fuss-free, lightweight way to get a rapid indication of alcohol level. It won’t replace a professional test, but it stops the guesswork and gives you a sensible nudge in the right direction. If you’re unsure about a result, leave more time before driving or seek a professional test.