T2 Wireless Bluetooth Speakers is a portable Bluetooth speaker that delivers surprisingly powerful stereo sound. The outdoor speaker that allows you to take your music with you anywhere you go. Use freestanding or attach to a backpack with the strap and carabiner.. Support A2DP, AVRCP, Handsfree profile. Bluetooth Version: V4.0+EDR Class 2 Working Range: Up to 10metes Dimension: 180mm x 63mm x 63mm Net Weight: 560g Speaker:40mm Loudspeaker Output: 2 x 3W Frequency Response:280HZ-16KHz Signal-to-Noise: 95dB 10.Distortion: 0.5% Battery Voltage/Capacity: 1800MAH Battery Charging Voltage: 5V 0.5V Battery Charge Time: 4hours Play time values for speakers: 10hours Standby time: 200 hours Package List: T2 Bluetooth speaker x1 Charging cable for T2 x1 Mountaineering hook for T2 x1