Colour: Black, Red, Silver
Material: Aluminum Alloy Operating range: 10m Function: Song Switch, Answering Phone, Switch Song, Multi Connection Function, Microphone, Micro SD/TF Card Music Playing, USB (Universal Serial Bus) Flash Drive Music Playing, FM, Noise Cancelling, LED Flashing, Portable Application: Mobile Phone, Computer, Tablet PC Talk time: 2 hours Music Time: 2-3 Hours Charging Time: About 2 Hours Interface: TF Slot, Micro USB (Universal Serial Bus) Battery Capacity: 400m Ah Battery Type: Built-in Rechargeable Battery