Technical Specifications Brand: Hewlett-Packard Model: BT200 Colour: Black, White Bluetooth version: V5.0+EDR Sound channel: 2 Type: bilateral stereo Connection mode: Bluetooth Connection distance: 10m or more Waterproof performance: IPX5 Frequency response: 20HZ-20KHZ Sensitivity: 107db Impedance: 32Ω Duration of endurance: 22 hours continuous play