Features: Battery indicator on cellphone: supportedTWS connection in series: supportedWaterproof rate: IPX6Colorful ambient lightsMicro-SD card: SupportedEasy to carry via the hanging ropeSpecifications:Bluetooth scheme: V5.3, JLAC6965ESupported protocols: a2dpavctpavdtpavrcphfpsppsmpattgapgattrfcommsdpl2cap profileBluetooth operating frequency: 2,402~2,480MHzHorn power: 8WBattery capacity: 1,200mAhPlaytime: 5~6h (70% VOL)Charging time: 3~5hSize: 132 * 132 * 67mmEffective transmission distance: 10mHorn: 52 * 52mm, 4 ΩCharging Type-C interface: DC5V, 500mAh