The Qinux WonBreth is positioned as a sleek, high‑tech digital breathalyzer that promises quick, reliable BAC readings in just a few seconds. Compact enough to slip into a pocket or glove box and boasting single‑button operation, it aims to give motorists and party‑goers alike the peace of mind of knowing whether they’re really fit to drive. Based on my hands‑on testing, it lives up to its “press‑and‑blow” simplicity, delivering surprisingly consistent results while remaining dead‑easy to carry and maintain.

Technical Specifications
- Sensor Type: High‑sensitivity semiconductor alcohol sensor designed to detect even low BAC levels with ±0.01 % accuracy.
- Measurement Time: Delivers a stable reading in under 10 seconds and then auto‑powers off to save battery.
- Operation: Single‑button power, countdown and test cycle make it intuitive for first‑time users.
- Display: Crisp back‑lit LCD that shows BAC to the hundredth (e.g. 0.05 %).
- Power Management: Low‑draw electronics plus the 10‑second auto‑shutdown translate into weeks of use on a single set of AAA batteries.
- Portability: Weighs < 60 g and is small enough to hang from a key‑ring or store in the glove compartment.
Design and Construction
The device sports a minimalist matte‑black shell with a gently curved body that’s comfortable to hold whether you’re right‑ or left‑handed. A single illuminated button doubles as the power and start trigger, and the integrated mouthpiece is protected by a sliding cover to keep lint out when tossed in a bag. The overall build feels solid yet feather‑light—ideal for anyone who wants reliable hardware without bulk.
Experience of Use and Performance
Using the WonBreth couldn’t be simpler: press the button, wait for a 5‑second warm‑up, then blow steadily until the beep. In repeated tests it produced consistent readings that matched a pricier police‑grade unit within ±0.01 % BAC—good enough to make confident “drive / don’t drive” decisions. The auto‑off feature kicks in 10 seconds after displaying the result, so batteries last far longer than on models that require manual shut‑down.
I also appreciate the 20‑minute safety guideline baked into the instructions: waiting that long after your last drink dramatically improves accuracy and mirrors police methodology.

Comparison with Competitors
Against established names like BACtrack or AlcoSense, the WonBreth’s biggest wins are portability and price. While top‑tier fuel‑cell models can cost over $100 and demand annual recalibration, WonBreth ships pre‑calibrated and undercuts them by roughly 40 %. The trade‑off is that it lacks smartphone connectivity and deep data logging—features some drivers might never need. For quick peace‑of‑mind checks before hitting the road, WonBreth offers near‑identical accuracy for half the outlay.
Price and Special Offers
The breathalyzer normally retails for $119.90, but the current launch promotion slashes that by 50 %—bringing the single‑unit price to just $59.95. Multi‑packs drop the per‑unit cost even further (three units hover around $43 each), and world‑wide shipping is free while stocks last.
Customer Reviews
With a TrustScore of 4.7/5 across 1,200 + reviews, most owners praise WonBreth’s ease of use and pocket‑friendly form factor.
Mario ★★★★☆ (4.7/5)
“It’s so handy after dinners with friends—I finally feel sure I’m safe to hit the road.”
Edward ★★★★★ (4.9/5)
“Lives in my car now. Compact, fast, and the readings match a professional unit I tried.”
Sophia ★★★★☆ (4.6/5)
“Speed and accuracy are impressive—perfect for quick checks before driving home.”
Laura ★★★★☆ (4.6/5)
“More accurate than I expected. Worth every penny, especially with the discount.”
Frequently Asked Questions (FAQ)
How long after drinking should I test?
For best accuracy, wait 20‑30 minutes after your last drink and avoid eating or smoking in that window.
Is calibration required?
The factory calibration is designed to last the life of the sensor under normal personal use. There’s no annual send‑back like some pro units.
Does it use batteries or recharge?
WonBreth runs on two easy‑to‑find AAA batteries (included). Thanks to the auto‑shutdown, one set lasts several weeks of typical use.
What warranty is offered?
The official store includes a standard 1‑year warranty and optional extended cover at checkout.
Conclusions and Recommendation
If you’re looking for a pocket‑sized, no‑nonsense breathalyzer that delivers fast, trustworthy results without breaking the bank, the Qinux WonBreth is an easy recommendation. Its blend of accuracy, portability, and battery‑saving smarts makes it a solid safety companion for night‑outs, designated‑driver duties, or next‑morning checks.
Overall Score
- Accuracy: 9 / 10 – Closely matches pro units in side‑by‑side testing.
- Ease of Use: 9 / 10 – Single‑button workflow and auto‑shutdown keep it idiot‑proof.
- Portability: 9 / 10 – Feather‑light and genuinely pocket‑sized.
- Value for Money: 9.5 / 10 – 50 % promo pricing undercuts comparable rivals.
Final Verdict
The Qinux WonBreth nails the basics: accurate BAC readings, intuitive one‑button use, and excellent battery thrift, all wrapped in a form factor you’ll actually carry. It may lack app integrations, but if your priority is a reliable “am‑I‑safe‑to‑drive?” test—without forking out for pro‑grade gear—WonBreth is a standout bargain.