Bluetooth Version: Bluetooth 4.1 Headphone Stereo Music Headset Model Type: Wireless Headset With Microphone Compatible Model:All Smart Phone Voice Commands. Custom mobile charging cradle / carrying case. Extended battery life. High-fidelity sound and voice quality effect Supports Bluetooth: Headset Profile, Hands-free Profile (DSP technology) Support Bluetooth stereo music playback Bluetooth 4.0 version, can be simple pairing safely Can be casual talk while driving / working or walking Transmission Distance: 10M Bluetooth Version: V4.0 Talking Time: ≥3-5 hours Standby Time: ≥24 hours Support Stereo: YES Brand No Brand SKU 100350682_NP-1020616909