Aluminum Rounded Cylinder Body, Top Metal Net, Plastic Bottom, 5 Buttons, LED Hole, Mic Hole, MicroB-F, 3.5mm-F Aux In; Bluetooth v.5.0, A2DP 1.2, AVRCP 1.4HFP 1.5, Up to 10m; Li-Pol Battery 3.7V 1050mAh, 2h Charge 5V 1A/8h BT/10h AUX; 180Hz-20kHz, 3.5W, Mono, Hands-Free; 52cm Flat Red Cable A-MicroB;