The 49n Ultra Doppler USB Rechargeable tail light provides high visibility with super bright LED's that mount in seconds thanks to it's highly versatile IPX3 waterproof rated silicone body. The Ultra Doppler is USB rechargeable saving money while reducing your footprint.Ultra Doppler Tail Light Specifications

• 3 super bright LED's producing 7 Lumen's
• 4-Modes
• 3 Strobe patterns – 12 Hour burn time
• Steady on – 9 Hour burn time
• Cable free integrated USB 2.0 charging
• 180° Side visibility
• IPX3 Waterproof rating
• Quick release, multi-mount silicone body
• Red low battery indicator
• Green fully charged battery indicator
• 2 Hr charging time
• Fits all bar and seatpost diameters
• Black body, red lens
• 40 grams