... , bike light, rechargeable bike tail light, bike rear light,Rechargeable with USB port bike lamp, bike tail lamp, bike rear lamp, bike ... rear light, BICYCLE TAIL LAMP.5pcs super bright white LED..with uniquely designed focus lens.charging indication by 1pc D3 red ... be charged from any USB power.or charged during riding with our bicycle dynamo power generator TK-031FD (optional).charging time ...