Do you need a pair of earphones， when your previous ones are out of use? The BT-222 Wireless Bluetooth V4.0 Sport Earphones will bring your life a lot of convenience. With excellent material and fine workmanship， they feature concise exterior， excellent sound quality and a long life span. As long as you have them， you can happily enjoy your music without being interrupted. The wireless Bluetooth earphones can free your hands， so you can listen to music and receive calls conveniently when you are doing sports.                                    Features             Excellent materials ensure excellent sound quality and a long life span for long-term use<br> Concise and nice-looking exterior makes them stand out from the crowd<br> As long as you have them， you can happily enjoy your music without being interrupted<br> The wireless Bluetooth earphones can free your hands， so you can listen to music and receive calls conveniently when you are doing sports<br> Convenient without wire wrapping   <br>                                                            Specifications             Protocol Standard     Bluetooth V4.0    <br> Impedance     32Ω    <br> Frequency Response     20HZ~20KHZ    <br> S/N     ≥88dB    <br> Sensitivity     105dB    <br> Carrier Frequency     2.4G ISM， 2.402- 2.480GHZ    <br> Rated     4dBm    <br> Magnet φ     9mm    <br> Battery     3.7V 60mAh    <br> Working Time     3- 5 Hours    <br> Standby Time     110h    <br> Length of Cable     50 cm    <br> Color     White & Red    <br> Dimensions     (1.18 x 1.02 x 0.59) " / (3 x 2.6 x 1.5) cm (L x W x H)    <br> Weight     0.39 oz / 11 g     <br>                                                             Package Includes            1 x Sports Bluetooth Earphone<br>1 x USB Cable<br>1 x User Manual<br>6 x Headset Earmuffs<br>2 x Ear Rack<br>