Features:
Work with most bluetooth-enabled devices like iPhone 5S/5C/5/4S/4;Samsung Galaxy Note3/Note2/S4/3; LG; HTC and so on.
Serves as both a wireless music Headset and Bluetooth phone headset for hands free calling with built-in Mic.
Control your music player directly from the headset with functions such as play, pause, next & previous track, and volume.
Supports multipoint connections: Can simultaneously connect two mobile phone. 
Support 3.5mm stereo audio input.
You can answer/reject/end incoming call.
Bluetooth working distance is up to 10m/30ft away.
Adjustable design for fit with a lot of comfort. 
Built in rechargeable Li-battery. 

Specification:
Connection: Bluetooth Wireless connecting
Bluetooth specification: Bluetooth 4.1 + EDR
Support profiles: HFP, A2DP, AVRCP
Operation Range: Up to 10m
SNR: ≥90DB
Music formats: MP3/WMA/WAV
Battery: Built-in lithium battery
Talk time: 15 hours
Interface: 1 * Micro USB; 1 * AUX port
Playing time: 20 hours
Standby time: 200 hours
Charge voltage: DC 5V/ 500mA
Charge time: 2.5 hours
Speaker diameter: 30mm
Color: White
Item weight: 97g/ 3.42oz (without accessories)
Package size: 18.5 * 16 * 5cm/ 7.3 * 6.3 * 2.0in
Package weight: 190g/ 6.7oz

Package includes:
1 * Bluetooth headphone
1 * Charging cable
1 * Male-to-male 3.5mm audio cable
1 * User manual