Bluetooth wireless portable shower speaker IPX6 rating: Water volume tested at 100 liters per minute. Duration up to 3 minutes. Features 1. Luxury Metal Surface 2. Easy access volume control 3. Excellent Sound Performance 4. Plug and Play / No Driver Installation Required 5. Magnetically Shielded to prevent distortion from screens 6. Compatible with all bluetooth brand name devices and model PCs/Laptops * 5V 1A Wall Adapter is recommended for charging (not included) RF Range 10meters (33ft) Battery Built in li-on battery Capacity 650Mah Charging Voltage DC 5V Working Voltage 3.3~4.5V Microphone Built in Hands-free function Yes,redial the last phone call number Charging Time ~3h Playback Time ~4-5h