The COOSPO TR70 Smart Radar Tail Light is generally well-regarded as a budget-friendly alternative to the Garmin Varia, offering good battery life, brightness, and smart features. However, it has some accuracy issues, including false positives and detection limitations, and its mount is incompatible with Garmin quarter-turn mounts.
Pros
- Excellent battery life (lasted 19.5-30 hours depending on mode)123
- High brightness comparable to Garmin Varia43
- Accurate vehicle detection after firmware updates (no false positives/negatives in some tests)1
- Multiple lighting modes customizable via app14
- Smart features: brake light and increased flashing when vehicles approach13
- USB-C charging port123
- Safety tether/loop included to prevent loss23
- Works with Garmin devices and displays battery level2
- Significantly cheaper than Garmin Varia (about one-third the price)1
Cons
- Occasional false positives (about 3 per hour in one test)423
- Mounting orientation rotated 90° compared to Garmin, so Garmin holders cannot be used directly23
- Does not meet claimed 30-hour battery life (measured 19.5 hours)3
- USB-C cover is very difficult to open2
- Radar drops detection too quickly when a vehicle matches speed2
- Maximum detection speed of 128 km/h misses faster cars3
- Can be 'chirpy' with multiple beeps, which may annoy some users1
Key Facts
- Weight: 64-68g depending on source13
- Claimed detection range: ~140 meters, can detect up to 7 vehicles13
- Claimed battery life up to 30 hours, but measured 19.5 hours in day flash mode13
- USB-C charging, full charge in 2 hours12
- Waterproof rating: IP67 (immersion up to 1m for 30 min) or IPX7 per blog13
- Mounting orientation rotated 90° compared to Garmin, so Garmin quarter-turn mounts are not directly compatible23
- Detection speed range: 6-128 km/h3
- Protocols: ANT+ and Bluetooth3
Reviews & Ratings
10:13The reviewer describes the COOSPO TR70 radar tail light as a budget-friendly unit that enhances safety by alerting cyclists to approaching cars from behind. It pairs with the CS600 cycling computer to display radar information on the screen. The light has multiple flashing modes, is bright, and uses a Garmin mount for easy attachment. The reviewer notes that once used, it becomes indispensable.
18:52The reviewer states that the COOSPO TR70 Smart Radar Tail Light works as well as the Garmin Varia radar, despite negative reviews of earlier versions. They emphasize that after firmware updates, it provides accurate vehicle detection without false positives/negatives, has excellent battery life, multiple lighting modes, smart safety features, and is significantly cheaper than comparable units.

The reviewer tested the Coospo TR70 Smart Radar Tail Light and found it to be a cheap Chinese radar with good battery life and brightness, but with significant accuracy issues including about 3 false positives per hour. They note it doesn't match the reliability of established brands like Garmin Varia.
The COOSPO TR70 Smart Radar Tail Light is generally well-received by users, offering good battery life and USB-C charging. It is visually similar to the Garmin Varia but uses a 90-degree rotated mount. Users appreciate the safety loop and compatibility with Garmin devices. However, there are concerns about false positives and inconsistent detection of vehicles, as well as a stiff USB-C cover.
AI Summary
Pros
- Excellent battery life (still full after 5 hours of riding)
- USB-C charging port
- Safety loop for attaching a strap to prevent loss
more pros in the review
Cons
- Occasional false positives (radar shows a vehicle when none is present)
- Radar drops detection too quickly when a vehicle matches speed
- USB-C cover is very difficult to open
more cons in the review
Key Points
- Price around 60€ per unit when buying two
- USB-C charging port
- Battery lasted at least 5 hours without depletion
more key points in the review
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COOSPO 🔥TR70 Smart Radar Tail Light

COOSPO TR70 Radar-Rücklicht, intelligentes Fahrrad-Rücklicht, Bremswarnung, IP67, wasserdicht, Radfahren, Rücklicht, 7 Lichtmodi, Rücklicht - AliExpress 18

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