You’re always in control with economical and easy-to-use BACtrack Select Series breathalyzers for personal use. Each Select Series model includes advanced semiconductor sensor technology for accurate results up to 0.40% BAC. And all feature simple, intuitive operation--just press power and begin testing in seconds.
These breathalyzers fit easily in your pocket, purse, or glove compartment, and the ultra-compact Keychain breathalyzer goes with you wherever you carry your car keys.

See how the BACtrack Select Series breathalyzer models compare.
| Model | S70![]() |
B70![]() |
S50![]() |
S30![]() |
Keychain![]() |
|---|---|---|---|---|---|
| Price | Our Price: $99.95 Retail Price: $129.99 |
Our Price: $79.99 Retail Price: $99.99 |
Our Price: $59.99 Retail Price: $79.99 |
Our Price: $49.99 Retail Price: $69.99/ea. |
Our Price: $29.99 Retail Price: $39.99/ea. |
| Sensor | Advanced Semiconductor |
BluFire Technology | Advanced Semiconductor |
Advanced MicroCheck™ Technology |
Advanced Semiconductor Technology |
| Features | User adjustable features such as blow time, units of measure, and audible warnings for BAC thresholds. Proprietary FlowCheck Technology ensures deep lung air sample. |
Easy testing by exhaling into the dual flow breath chamber, so mouthpieces are not necessary. Compact size and sleek design. |
Rugged design, included ruby-red LED for low light situations; affordable price. |
Very small size; affordable price. |
Keychain ring, miniature size and low cost. |
| Ideal Users | Businesses, Schools, Clinics performing Alcohol Screening, Personal Use |
Businesses, Schools, Clinics performing Alcohol Screening, Personal Use |
Businesses, Schools, Clinics performing Alcohol Screening, Personal Use |
Personal Use | Personal Use |
| Breath Pump | No | No | No | No | No |
| Decimals | Three (0.000 %BAC) | Two (0.00 %BAC | Two (0.00 %BAC) | Two (0.00 %BAC) | Two (0.00 %BAC). |
| Dimensions | 4.8 x 2.3 x 0.8 in | 4.25 x 1.63 x 0.81 in | 4.5 x 2.3 x 1.0 in | 4.0 x 1.33 x 0.9 in | 2.44 x 1.45 x 0.55 in |
| Weight | 4.2 oz (119g) | 1.4 oz (39.7g) | 3.88 oz (110g) | 1.87 oz (53g) | 2.0 oz (5.7 g) |
| Mouthpieces | 6 | Not Applicable | 6 | 2 | 3 |
| Power | 2 AA Batteries, included |
2 AA Batteries, not included |
2 AA Batteries, included |
2 AAA Batteries, included |
1 AAA Battery |
| Warranty | Full One-year Warranty |
Full One-year Warranty | Full One-year Warranty |
Full One-year Warranty |
Full One-year Warranty. |

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BACtrack breathalyzers offer you an affordable, convenient, and highly reliable way to measure your BAC levels and drink responsibly. |
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BACtrack has helped concerned parents and family members realize a higher level of transparency and accountability within their families. |
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Thousands of driving fatalities and workplace injuries could be avoided if business owners make the simple decision to check their customers’ and employees’ BAC levels. |
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For situations that demand trusted results, BACtrack professional-grade breathalyzers are the alcohol testing devices of choice. |
