The TR20 from Ravemen is a fantastic little rear light. Super lightweight at only 20 grams, you wouldn't even notice this light if it wasn't for how stunningly bright it is.
 
Utilising COB LED light bar technology the TR20 outputs 20 lumens and has a wrap around lens design which offers side as well as rear visibility.
The simple quick release mounting system can attach to backpack straps, seat bag loops, even some clothing. THe mounting bracket can be secured to any slightly rounded hard material like your seat post or helmet.
Recharge the internal 200 mAh 3.7v Lithium-Polymer battery by plugging the included micro USB cable into any powered USB port on your computer. You can also charge this light with most micro USB cell phone chargers.
 
FEATURES
 
 
High efficiency COB LED light bar technology
 
 
20 Lumens output
 
 
Wrap around lens for rear and side visibility
 
 
Recharge via Micro USB
 
 
Built in memory saves last used mode
 
 
auto power save mode
 
 
Low battery indicator
 
 
Quick release mount for versatile mounting options
 
 
Seat post mount compatible with 24 to 36mm posts

 
RUNNING MODES
 
 
High: 1.5 hour run-time
 
 
Low: 4 hour run-time
 
 
Flash: 10 hour run-time
 
 
Rapid Flash: 10 hour run-time
 
 
Pulse Flash: 11 hour run-time