Features
Support V4.1 Bluetooth wireless play and transmission.
10m wireless transmission range.
Support high-quality stereo play.
40mm neodymium speaker.
Ultra long calling time and standby time.
Suitable for all mobile phones with Bluetooth function and computers.
Mini and compact design for convenient carry.
Foldable steel is retractable and comfortable to wear.
Soft and permeable earmuff.
The equiment has the TF card slot,you can put into the TF card and listing the music,when you are running,you don't need to take the height cell phone in your pocket,it's the amazing chose,and the equipment cover was painted the light oil,can protector it and it's luxury. Freedom to exercise, move around and commute without wires to tangle or hold you back.

Specification
Speaker Diameter 1.57"" / 4cm
Sensitivity 105dB S.P.L at 1KHz
Frequency Response 20Hz-20,000Hz
Rated Power 25mW
Transmission Power Class 2
Radio Frequency 2.4-2 .48GHz
Charging Time 3 Hours
Talking Time 10 Hours
Music Playing Time Up to 7 Hours
USB Cable Length 23.62"" / 60cm
Weight 1.48oz / 42g

• Talking Time 10 Hours and Music Playing Time Up to 7 Hours.
• Adopting imported and superb CSR Bluetooth smart chip, this headphone ensures stable Bluetooth receiving.
• Three-dimensional buttons design for convenient and quick use.
• This Mini503 Wireless Stereo V4.1 Bluetooth Back-mounted Sporty Headphone is a must-have for your sport, such as jogging, skating, mountaineering, etc.

Talking Time 10 Hours and Music Playing Time Up to 7 Hours.bee star