Size for Headset: Φ19.5mm*11mm
USB cable length: 15cm+/-1cm
Bluetooth version: Bluetooth V4.1
Charging means: Micro USB cable
Bluetooth standard: Class 2
Profiles supported: HSP/HFP/A2DP/AVRCP
Talk time: up to 6 hours
Playing time: up to6 hours
Standby time: up to 480 hours
Charging time：about 2 hours
Voice chat: Supported
Voice prompt: Supported
Economical design for wearing comfortably，with high-end aluminum drawing technology adopted, the eye-catching HV-H990BT is extremely durable and anti-wear.
High-end Bluetooth V4.1 earphone. Only 16g，ultra-light. Free of burden with long time wearing.
Long working and Standby Time: Up to 6 hours talking/playing time and 480 hours standby time.
On-screen battery indicator is supported (iPhone only).
Voice prompt and HD wideband speech are supported, therefore you can voice chat with your friends anytime and anywhere.
Specially design for sports enthusiast, HV-H935BT is the perfect music companion for sports and running.