Callone Microphone Stereo Sport Headsets for All Phone – COBT-X7S Bluetooth Headset with Mic (Black, In the Ear)

Bluetooth version :V 4.1. Standby time is 120 hours. charging time is 1-2 hours. Play music time is 4 hours. Frequency range is 2.402 g- 2.480 g Hand free call BASS port for superior sound Portable during sports.Complete information is provided in manual for connecting Ultra-flexible neckband ensures resistance against wear and tear. Wireless Earphones with Mic; Music & Volume Control Bluetooth Technology allows it to be compatible with other Bluetooth devices Hi-Fi Stereo Sound Output is clear and sharp so you never miss a beat or note. The sharp sound output is great for calls too