Sanag M11 IPX7 Waterproof Outdoor Portable Mini Bluetooth Speaker(Black)

1. Bluetooth version: 5.02. Transmission distance: 10m3. Battery capacity: 1800mAh lithium battery4. Playing time: about 7 hours (50% volume)5. Charging time: about 4 hours6. Frequency range: 20Hz-20KHz7. Input power: 7W8. Speaker: 52mm 4ohm9. Function: bluetooth connection, hands-free calling, TWS series connection, TF card expand10. Waterproof grade: IPX711. Material: ABS12. Product size: 85.5x95x85.5mm