The COOSPO TR70 Smart Radar Tail Light offers Garmin Varia-like radar functionality at a significantly lower price, with good battery life and brightness, but has notable accuracy issues including false positives and detection limitations compared to established competitors.
Pros
- Excellent battery life (up to 30 hours claimed, 19.5+ hours tested)
- High brightness comparable to Garmin Varia
- Accurate approaching speed reporting and multiple vehicle detection
- Seven customizable lighting modes with brake light function
Cons
- Gives about 3 false positives per hour of riding
- Signal sometimes reflects from opposite-direction cars or traffic signs
- Maximum detection speed misses faster cars
- Multiple beeps can become annoying and cause users to ignore alerts
Key Facts
- Weight 64-68g
- USB-C charging with 2-hour full charge time
- IP67/IPX7 waterproof rating (immersion up to 1 meter)
Reviews & Ratings
The 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.
AI Summary
Pros
- Works as accurately as Garmin Varia radar after firmware updates
- No false positives or negatives experienced during testing
- Excellent battery life (up to 30 hours with radar on)
- Seven different lighting modes customizable via app
- Smart features: brake light function and increased flashing when vehicles approach
- Easy pairing with head units
- IP67 waterproof rating
- USB-C charging (full charge in 2 hours)
- Lightweight (68g)
- Significantly cheaper than Garmin Varia (about one-third the price)
- Accurately detects motorcycles and groups of vehicles
- Multiple mounting options for different seat post shapes
- App allows turning smart features on/off
Cons
- Can be 'chirpy' with multiple beeps (beeps when vehicle detected and again when about to overtake)
- Smart features like brake light and increased flashing may irritate some users
- Works best on straight roads (limited by line-of-sight on twisty roads)
- Sometimes detects pairs of motorcycles as single vehicles
- Some users may find the multiple beeps annoying
Key Points
- Model: COOSPO TR70 Smart Radar Tail Light
- Price: €77 (with possible 10% discount)
- Detection range: ~140 meters
- Can detect up to 7 vehicles simultaneously
- Weight: 68 grams
- Waterproof rating: IP67 (immersion up to 1 meter for 30 minutes)
- Charging: USB-C, 2 hours for full charge
- Mounting: Includes inserts for D-shaped, round, and aero seat posts
- Compatible with standard Garmin quarter-turn mounts
- App: COOSPO Ride app for customization
- Firmware updates have significantly improved performance
The reviewer states that the COOSPO TR70 Smart Radar Tail Light is the best performer among the four radars tested, with significant improvements over the original version, but still has notable usability issues.
AI Summary
Pros
- No false positives recorded during testing
- Radar functionality works well in perfect conditions
- Approaching speed is reported accurately
- Multiple vehicles are detected well
- Some detections at or just beyond 140m range
- Didn't scare the reviewer when riding compared to other units
- Company improved the product based on feedback
Cons
- Unit is 'chirpy' with two beeps for single detections (orange then red alerts)
- Orange-to-red alert transition isn't configurable on the unit
- Continual beeps became annoying and caused the reviewer to start ignoring them
- Consumer confusion between old and new TR70 versions
- Requires new hardware for updates (not just firmware)
Key Points
- Updated hardware with firmware version 1.08
- Supports ANT Plus Radar connectivity
- Has a companion app but no audio comes through when tested
- Doesn't work in background like Varia companion app
- Price around $100 US (half the price of RT515)
- Company confirmed only new version is for sale
- Original TR70 had firmware version 1.07 with many false positives
cyclistshub.com
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.
AI Summary
Pros
- Excellent battery life (lasted about 19.5 hours in day flash mode)
- High brightness (comparable or slightly higher than Garmin Varia RTL515)
- Good side visibility
- Auto sleep feature extends battery life during stops
- Brake sensing feature
- Changes light pattern during entire overtaking period
- Light modes are slightly customizable
- Safety tether included
- Battery life indicator
- USB-C charging port
- App can replace a bike computer by showing cars
- Detects multiple cars accurately, especially in bends
- Mount was secure and didn't slide on aero seatpost
Cons
- Gives about 3 false positives per hour of riding
- Signal sometimes reflects from cars driving opposite direction or traffic signs
- Accuracy lags behind established Varia radars
- Maximum detection speed of 128 km/h (79mph) misses faster cars
- Doesn't meet claimed 30-hour battery life (only 19.5 hours)
- Mount socket is incompatible with Garmin quarter-turn mount (rotated 90°)
- First unit had issues requiring factory mode reset with untrusted app
- Light flickers several times per second (visible only through camera)
Key Points
- Dimensions: 96×39×23 mm
- Weight: 64g
- Claimed battery life: up to 30 hours (day flash)
- Real battery life: 19.5 hours (day flash)
- Charging: USB-C
- Detecting distance: 140m
- Detecting speed: 6-128km/h
- Viewing angle: 220°
- Horizontal angle: 40°
- Water resistance: IPX7
- Protocols: ANT+, Bluetooth
- Tested with firmware v1.0.8
- Includes saddle mount with aero and D-type adaptor
- Auto standby activates after 3 minutes of inactivity when connected to bike computer
Where to Buy
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