Specifications:
Bluetooth version: v4.0, CSR8635
Working distance range: 10 meters
Support A2DP/HFP/HSP/AVRCP protocol.
Support the battery level display of iphone and some other cell phones.
Frequency: 2.4-2.48GHZ
Talking time: 6 hours.
Music time: 5 hours
Standby time: 175 hours
Frequency Response: 20Hz-20KHz
Speaker Impedance: 16ohm
Sensitivity(S.P.L): 110dB
Charging Interface: Micro-USB
Package list:
1*Headphone
1*USB line
* Support simultaneously connecting to two mobile phones.
* Support Various Bluetooth enabled devices, for example mobile phone, PDA, laptops, etc.
* Multipoint & Voice Prompts(English,Chinese)
* Top Quality Microphone
* Music Streaming with Stereo Cable
* Easy Volume & Music Control
Specifications:
Bluetooth version: v4.0, CSR8635
Working distance range: 10 meters
Support A2DP/HFP/HSP/AVRCP protocol.
Support the battery level display of iphone and some other cell phones.
Frequency: 2.4-2.48GHZ
Talking time: 6 hours.
Music time: 5 hours
Standby time: 175 hours
Frequency Response: 20Hz-20KHz
Speaker Impedance: 16ohm
Sensitivity(S.P.L): 110dB
Charging Interface: Micro-USB
Package list:
1*Headphone
1*USB line

• Bluetooth Profiles: CSR 4.0, Headset & Handsfree and A2DP/HFP/HSP/AVRCP.Easy Connected.
• Warranty -- 90 days by amazon . 365 days by EAST EDGE ( instructed in user menu)
• Adjustable length / customered earbud / , Easy Fit kids / teenager / adults
• Simple-to-use: control all functions of your music (volume, sound, song selection) and calls from your phone via voice control (yes/no)
• Fast Charging & Power Saving -- Charge 1 minutes , enjoy 1+ hour music

Bluetooth Profiles: CSR 4.0, Headset & Handsfree and A2DP/HFP/HSP/AVRCP.Easy Connected.SmartSync