<b>Specification:</b> <br>Bluetooth: V4.0 <br>Wireless range: 10 meters <br>Support bluetooth headset, handsfree A2DP and AVRCP <br>Charging time: 3 hours <br>Music/talk time: 5-7 hours <br>Standby time: 150 hours <br>160 mAh rechargeable li-polymer <br>voletage work: DC 3.3 V-4.2 V <br>Charger: DC 5 V <br>Product Weight: 30g <br> <br><b>Package Includes:</b> <br>1 x Bluetooth earphone