SpecificationsStereo Bluetooth Speaker Rugged Style Design Ergonomic and easy to transport IP67:Waterproof.Submersible up to 1 meter Bluetooth connection V5.0 TWS:Compatible with multiple devices (BST-500) Bluetooth connection V5.0 Bluetooth frequency response:2.4GHz-2.480GHz Operating range up to 10 meters Music format: MP3 /WMA /WAV /APE /FLAC Protocol AVRCP V1.6 / A2DP V1.3 / HFP V1.7 / HSP V1.2 AUX IN (3.5mm)input Battery capacity: 2000mAh 3.7V Battery play time:8 hours Charging time: 2 to 3 hours Rechargeable battery Wrist strap Hands-free function Built-In mic.Compatible with Android, iOS and Windows devicesWeight: 548gDimensions: 202x 76.6x 88.6mm Hyper bass Quality Power of 2x6W RMS Frequency response: 80Hz-20KHz