Improve your audio experience using the Wireless Bone Conduction Speaker, built to adapt to . With its waterproof and dustproof features, it thrives in challenging environments like bathrooms, showers, or outdoor trips. The small yet powerful design produces rich , offering perfect sound quality indoors or outdoors. Product power: 4.5W Speaker horn: φ28mm, 4Ω, 5W; Battery: 3.7V/500mA, polymer battery; Charging: Type-C, DC 5V/1-2A; Playback time: 70% volume/approximately 4 hours; 50% volume/approximately 6 hours; Standby time: approximately 6 months; Product dimensions: Diameter: 52.5mm, Height: 27.5mm Surround connection: One by one (After holding down the power button for A and B speakers respectively, quickly the + key three times. Speaker A and Speaker B be successfully connected. Connect your phone to either of the speakers to complete the surround connection.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.