The High Sierra Outdoor Speaker & Wireless Powerbank offers built-in music controls and microphone, a 2×3-Watt speaker and 10-meter Bluetooth working range to play music up to 8 hours at maximum volume. This device features a IPX7 waterproof rating and the Bluetooth speaker can be submerged underwater for up to 30 minutes. Use the speaker two charge two devices at the same time using the built-in USB output or the built-in wireless charging power bank. The High Sierra Outdoor Speaker & Wireless Powerbank features a rechargeable 8000mAh battery and Bluetooth version 5.0. Key Features IPX7 Waterproof rating, Bluetooth speaker can be submerged underwater for up to 30 minutes Rechargeable 8000mAh battery Up to 8 hours of playback time at max volume Speaker can charge mobile device with built-in USB output or with built-in wireless charging powerbank Charge two devices at the same time Built-in music controls and microphone 2×3-Watt speaker Bluetooth version 5.0 10-meter (33 ft) Bluetooth working range