usb pass through 1.CE,FCC,ROHS 2.USB Port 3.4 Voltage ... Variable Voltage 3.2~4.8V usb pass through Specifications:1.Model: VV Pass through Battery2.Style:Smart Design3.Voltage: 3.0V ... /3.6V/4.2V/4.8V, and Various Voltage, from 3.0V to ... /FCC Shipping way EMS,TNT,DHL,UPS,FEDEX/Air transport How to order: 1. Tell us which models, Quantities, you want ...