Cygolite Dash 520 Lumen Bike Light & Hotshot Rechargeable Combo Set

Battery: 1, 112840 Lithium Polymer, 3.7(V), 4.81(Wh), 23g, 1, 602535 Lithium Polymer, 3.7(V), 1.67(Wh), 10g, Included 520 lumen headlight with 8 modes, 30 lumen tail light with 5 modes engineered for use on roads and commuting Headlight features exclusive quad LED Daytime Running Lights (DRL) to stand out in broad daylight USB rechargeable internal headlight battery lasts up to 63 hours, and tail light lasts 100 hours Low profile, water resistant design, headlight only weighs 75 grams and tail light only 35 grams.