BACtrack C6 Keychain Breathalyzer — Compact Fuel-Cell Accuracy, Rechargeable

The BACtrack C6 is a pocket-sized keychain breathalyzer that uses professional fuel-cell sensing to estimate your blood alcohol concentration quickly and reliably.

Small enough to clip to keys or slip into a pocket, the BACtrack C6 brings lab-grade sensing into an everyday device. It combines BACtrack's BluFire fuel cell technology and ZeroLine time-to-zero estimation in a compact housing, letting you get a numeric breath-alcohol estimate on the unit itself or send readings to the BACtrack app. Designed for occasional personal checks, the C6 offers an intuitive interface, rechargeable power, and a one-year warranty for added confidence.

How accurate is the BACtrack C6 compared with other personal breathalyzers?

The C6 uses BACtrack's patented BluFire fuel cell sensor, the same underlying technology used by professional devices. While no consumer device can replace lab testing, fuel cell sensors are the most reliable option for personal breath-alcohol readings and reduce the risk of false positives common with cheaper semiconductor sensors.

• Pro-grade BluFire fuel cell sensor for consistent readings.
• Calibrated factory settings for typical consumer use.
• Better specificity to ethanol versus generic alcohols than semiconductor units.

Can I use the C6 without a smartphone, and what does the app add?

Yes — the C6 works in Standalone Mode and displays BAC results directly on the device without a phone. When paired with the BACtrack app, readings transmit wirelessly so you can log tests, track trends over time, and access the ZeroLine estimate that shows an approximate time until BAC returns to 0.00%.

• Standalone Mode: instant on-device BAC readout.
• App Mode: wireless data sync, test history, and ZeroLine estimates.
• Easy switching between modes depending on your preference.

What are the size, power, and maintenance requirements?

The C6 is engineered for portability and everyday carry: it’s compact enough for a keyring or pocket and runs on a rechargeable battery. Occasional calibration or sensor servicing may be recommended for long-term accuracy, and the one-year warranty covers defects in normal use during the first year.

• Compact keychain-friendly dimensions for everyday carry.
• Built-in rechargeable battery with USB charging.
• Manufacturer one-year warranty and recommended maintenance guidance.

How quickly does the C6 give results and what does ZeroLine mean?

After a brief warm-up, the C6 provides a numeric BAC estimate in seconds following a proper breath sample. The ZeroLine feature uses your reading plus metabolism assumptions to estimate when your BAC may reach 0.00% so you can better plan travel and decisions, though it should be treated as an estimate rather than a guarantee.

• Warm-up and measurement take only a few seconds for fast feedback.
• ZeroLine offers an estimated time-until-zero based on your reading.
• Results are intended for personal guidance, not legal proof.

Who this device is for: The BACtrack C6 suits anyone who wants an accessible, higher-quality personal breathalyzer for occasional checks — commuters, social drinkers, hosts, and people who prefer keeping a compact tool on their keychain. It’s ideal if you value portability with the option to log results on a phone, and you prefer fuel-cell sensing for better alcohol specificity compared with low-cost sensors. It is not a substitute for professional or legal testing; use readings as a guideline to inform safer choices.