With powerful built-in rechargeable battery, this Bluetooth neckband headset can support more than 10 hours music time, 12 hours talking time, 110 hours standby time with a single charge, great for all day outdoor sports exercise and indoor entertainment. The Bluetooth headphone has 4 control buttons, you can use it to adjust the volume up an down and switch the previous/next music song. The multifunctional button allows you to use it to answer or reject call, or play & pause music. The earbuds can fit your ear with the maximum comfort. 

• Easily paired with Bluetooth enabled devices

• Built-in microphone for answering phone calls

• Clear voice transmission and superior sound quality

• Soft sponge cover for comfortable wearing

• Charged via attached micro USB cable

• Can be connected  with two smartphones at the same time

• Built-in rechargeable lithium battery

• Exquisite package box

Specification:

• Bluetooth: V4.0

• Support protocol: HSP, HFP, A2DP, AVRCP

• Transmitting power: Class2

• Effective distance: about 10 meters

• Frequency range: 2.4026GHz-2.480GHz

• Charge time: ≤ 3 hours

• Talk time: ≥ 12 hours

• Music time: ≥ 10 hours

• Standby time: ≥ 110 hours

• Weight: 38g