Serfas UTM-30 Cosmo 30 Lumen Tail Light Bike Accessories Brand_Sena The wide gear range ensures

The wide gear range ensures versatility for both climbing and descending on gravel roads

stoking the fire of perseverance within you

TRIATHLON AND MULTISPORT PROFILES: Automatically record splits with built-in profiles for triathlons

threaded Composite Matrix cover keeps the USB-C charging port sealed and free from dirt and debris

0 mm M stack 505

Serfas UTM-30 Cosmo 30 Lumen Tail Light Bike Accessories Brand_Sena The wide gear range ensuresFeatures: 30 Lumen Max Output 4 LED Chip Finned Lens Design Provides 270 Degree Visibility Blue LED Charge Indicator Daytime Flash Mode Up To 34 Hours Runtime Micro USB Rechargeable Specs: Solid Modes: High 15 Lumens 2 hrs Low 6 Lumens 6 hrs Flash Modes: Daytime Flash 30 Lumens 34 hrs High Flash 15 Lumens 19 hrs Low Flash 6 Lumens 34 hrs Size: Weight: 26 Grams w Bracket Overall Height 56. 3mm (2. 22?) Main Cylindrical Body Width 21. 7mm (0. 86?)