ETC R4 USB Rechargeable Rear Light - 4 Lumens

The ETC R4 USB rechargeable light is ideal for use as a back-up or as a main rear light in built up areas with good street lighting.

Key Features:

• 16 Bright LED's
• Output: 4 lumen
• Functions: Constant:(1h) Breathe Flash (2h) Fast Flash (2h) Slow Flash (2h) Circle flash (4h) Chasing flash (3h)
• Battery: 3.7V 300mAh
• USB rechargeable