




Product Details
Magicshine SEEMEE 300 RADAR Tail Light
The Magicshine SEEMEE 300 RADAR Tail Light combines a powerful rear light with an integrated radar detection system to help cyclists stay aware of vehicles approaching from behind. Designed for road riders and commuters, the radar continuously scans the road behind and sends alerts to compatible cycling computers, helping you stay informed and ride with greater confidence.
With a maximum output of 300 lumens, the SEEMEE 300 provides excellent rear visibility in both daytime and nighttime riding conditions. The radar system can detect vehicles approaching from long distances and warn the rider in real time.
Its compact design, long battery life, and IPX6 waterproof rating make it a reliable safety accessory for everyday road cycling.
Key Features:
- Rear Traffic Warning: Triggers a powerful 300-lumen alert flash when a vehicle approaches within approximately 70 m, helping improve rider visibility to drivers.
- Radar Detection: Detects approaching vehicles from up to 140 m behind and sends alerts to compatible cycling computers.
- Wide Radar Coverage: 35° radar detection angle helps monitor traffic even around gentle bends.
- 270° Visibility: Wide light distribution ensures you can be seen from multiple angles, with visibility up to 2.4 km in optimal conditions.
- Compatible Cycling Computers: Integrates with compatible devices from Garmin, Wahoo, and Hammerhead for real-time traffic alerts.
- Long Battery Life: Large 3350mAh battery provides up to 100 hours runtime depending on the lighting mode.
- USB-C Fast Charging: Fully recharges in approximately 2.15 hours via USB-C.
- PelotonSync Flash: Compatible Magicshine taillights synchronise flashing patterns to enhance group visibility while riding in a peloton.
- Dual Button Control: Separate buttons make it easy to manage lighting modes and radar features.
- Smart Lock System: Prevents accidental activation to help conserve battery power during storage or transport.
- Auto Wake-Up: Light automatically powers off after inactivity and restarts when vibration is detected.
- Easy Mounting: Quarter-turn mount allows quick and secure attachment to most seatposts.
- IPX6 Waterproof: Built to perform reliably in rain and wet riding conditions.
Specifications:
- Max Output: 300 Lumens
- Max Runtime: Up to 100 Hours
- Radar Frequency: 24GHz – 24.25GHz
- Maximum Detection Distance: Up to 140 m
- Maximum Detection Targets: Up to 8 vehicles simultaneously
- Horizontal Detection Angle: 35°
- Vertical Detection Angle: 45°
- Detectable Relative Speed: 5 – 100 km/h
- Wireless Protocol: Bluetooth, ANT+
- Visibility Angle: 270°
- Battery: 3.6V 3350mAh rechargeable battery
- Lens Type: PC optical lens
- Charging Time: Approx. 2.15 hours (5V / 2A)
- Weight: 113 g (3.99 oz)
- Dimensions: 29 × 34 × 96 mm (1.14 × 1.34 × 3.78 in)
- Warranty: 2 Years
Compatible Bike Computers:
The SEEMEE R300 supports ANT+ radar and Bluetooth connectivity and can pair with many popular cycling computers. Compatibility and functionality may vary depending on the device.
Garmin: Compatible with many Edge® series devices, including:
Edge 1040, Edge 1030 Plus, Edge 1030, Edge 840, Edge 830, Edge 820, Edge 810, Edge 540, Edge 530, Edge 520 Plus, Edge 520, Edge 510, Edge 130 Plus, Edge 130, Edge 25, Edge Explore 2, Edge Explore, Edge 1000.
Magene: C606 (compatible, but radar ANT+ functionality may be limited)
Sigma Sport: ROX 12.1 EVO (supports radar ANT+ only; light control may not be supported)
Stages Cycling: Dash M200,Dash M50 / L50
Hammerhead: Karoo 2/Karoo 3
Wahoo: ELEMNT ROAM
Bontrager: Trek RIDEtime Elite (supports light ANT+ only; radar alerts may not be supported) Transmitr Remote
Pioneer: SGX-CA600 GPS Cycling Computer
Note: Compatibility and available functions may vary depending on device firmware and ANT+ support. Please confirm radar compatibility with your cycling computer before purchase.
What’s in the Box:
- SEEMEE R300 Radar Tail Light ×1
- Round Seatpost Mount ×1
- Aero Seatpost Mount ×1
- USB-C Charging Cable ×1
- User Manual ×1
What Sets Alchemy Apart
The best pre-owned bikes
When you buy a pre-owned bike from Alchemy Cycle Trader, you’re getting more than just a great deal. Every bike is roadworthy certified, comes with a 3-month warranty, and includes your first service free - so you can ride away with complete confidence.
Buy with confidence
In-house Active Thermography Carbon Fibre Testing for extra peace of mind on pre-owned bikes.
Learn more about our carbon testing.
Expert Servicing & Ongoing Support
Our professional workshop team is here to keep your bike running at its best long after you’ve taken it home. From routine servicing to performance tuning, our qualified mechanics ensure your ride stays smooth, safe, and ready for every adventure. Whether it’s your first free service or future maintenance, you can count on Alchemy Cycle Trader for trusted support and expert care. Learn more about our workshop services.