Model: J05 Color: Black Bluetooth version: bluetooth 4.1 Operating range: about 10m (Free Space) Bluetooth profiles: HFP/A2DP/HSP/AVRCP Noise reduction: CVC6.0 with Microphone Standby time: about 180hours Charging time: about 1~ 2 hours Model: J05 Color: Black Bluetooth version: bluetooth 4.1 Operating range: about 10m (Free Space) Bluetooth profiles: HFP/A2DP/HSP/AVRCP Noise reduction: CVC6.0 with Microphone Standby time: about 180hours Charging time: about 1~ 2 hours