Bluetooth Version: V4.0 Brand: ZEALOT Operating range: Function: Song Switch, AUX External Audio Music Playing, Answering Phone, Voice Control, Switch Song, Microphone, Stereo, Micro SD/TF Card Music Playing, USB (Universal Serial Bus) Flash Drive Music Playing, Portable, Hi Fi Max Extended Capacity: 32GB Application: Mobile Phone, Computer, Tablet PC, MP3, MP4 Talk time: 12 Hours Music Time: 12 Hours Charging Time: About 3 Hours Bluetooth Rotocol: AVRCP, APTX, HSP, HFP Interface: 3.5mm Audio, TF Slot, USB (Universal Serial Bus) 2.0, Micro USB (Universal Serial Bus) Battery Capacity: 2400m Ah Battery Type: Built-in Rechargeable Battery Net Weight: 299 g / 10.55 oz