Taillights

Serfas' Thunderbolt Taillight delivers 35 lumens in an extremely versatile, USB-rechargeable package. Attach the water-resistant silicone body nearly anywhere on your bike, and use the high, low, or two flash modes to make sure cars or cyclists can see you when approaching from behind after dark. At just 50 grams, you won't even notice it's on your bike — but others will!

Quick Overview - 270 Degree High Visibility Design - Highly Adjustable Mounting System - 60 Lumens - Daytime Flash Mode - 5 Modes: 2 Solid / 3 Flash - Micro USB Rechargeable Limited Lifetime Warranty Serfas® warrants to the original purchaser that the product is free of defects in material, construction, and/or workmanship for the lifetime of the product. Battery Warranty – One Year Coverage Serfas® batteries are covered by a 1 year warranty from the original date of purchase. Features: - 60 Lumen Max Output - Micro LED Chip - Finned Lens Design Provides 270 Degree Visibility - Blue LED Charge Indicator - Daytime Flash Mode - Up To 22 Hours Runtime - Micro USB Rechargeable Specs: Solid Modes: - High – 30 Lumens / 1.5 hrs - Low – 6 Lumens / 5.5 hrs Flash Modes: - Daytime Flash – 60 Lumens / 22 hrs - High Flash – 30 Lumens / 14.5 hrs - Low Flash – 6 Lumens / 22 hrs - Weight: 26 Grams w/ Bracket Size: - Overall Height – 56.3mm (2.22?) - Main Cylindrical Body Width – 21.7mm (0.86?) - Widest Fin Width – 32.3mm (1.27?) - Charge Time: 2 hrs Using 500mA USB Wall Charger Product Package Contents: - (1) UTM-60 Cosmo 60 Lumen Tail Light - (1) Micro USB Charging Cable - (3 Sizes) Rubber Mounting Inserts - (3 Sizes) Rubber O-Ring Mounting Straps *Please note, flickering or pulsating observed in video is due to, “strobe effect,” a video capture phenomenon and is not representative of what is seen by the naked eye (steady shining light)*