Cursor HS-BT555 Bluetooth sports band headphone features voice calling function with mic, Bluetooth profile: headset, hands free A2DP, AVRCP; music time: 10 hours; standby time: up to 250 hours; charge time: 3 hours; Bluetooth version: V3.0+EDP; effective range: 10 meters; talk time: 11 hours; input: DC 5V/180mAh; dimensions: 14.5x10x6cm.