Havit SK905BT Wireless Bluetooth Speaker (Black). Product Features:. Package Contents : Speaker x 1; Volume Control: Buttons; Built-in On/Off Switch: Yes; Peak Power: 2 x 24 W; Number of speakers: 2; Product Depth: 71.5 mm; Charging Time: 3 hours; Materials: TPU; Color: Black; Connection Method: Wired and Wireless; Product Width: 160 mm; Product Height: 70 mm; Supported Memory Cards: External TF Memory Card; Supported Battery Type: Built-in; Application: Universal; Water Resistance: Yes; Bluetooth: Yes; Battery Capacity: 2000 mAh; Battery Working Time: 25 hours; Battery Voltage: 7.4 V; Product Type: Portable Stereo Speaker; Warnings: The product contains batteries that may be harmful to the environment. Please dispose of at appropriate collection points.; IP Protection Rating: IPX7; Bluetooth version: 5.3; Bluetooth range: 10 m; Number of USB ports: 1; Output power (rms): 2 x 10 W; USB power supply: Yes; Aux input: Yes; True wireless stereo technology (tws): Yes;.