Product features:
Multipoint connection, 1V2
DSP and CVC6.0 noise cancellation
Take/end/reject call
Voice guidance/control (say contact's name to dial)
Say "Yes"/"No" to answer/reject a call 
Play/pause music
Volume/track control
Incoming call number read
Last number redial
Switch between headset and phone for call answering
Overcharge/overdischarge protection
HiFi sound quality

Specifications
Bluetooth version Bluetooth v4.1
Chipset CSR8635
Battery 65mAh
Current certification CE, ROHS
Listen/talk time 4-6 hours
Standby time 150 hours
Charge time 1.5 hours
Case material ABS+PC
Speaker size Φ10
Speaker impedance 32Ω
Operating range 10 meters
Profile supported A2DP/AVRCP/HSP/HFP