High Quality High-End Quality Materials Are Beautifully Designed, Safe Bluetooth Function, Support Fm Radio, Tf Card, Aux Playback, Usb Portable With Lantern Transmission Range: About 10M/29.53Ft Audio Noise Ratio: 90Db Battery Capacity: 1200Mah Built-In Voltage: 3.7V Play Time: 3H-4H Speaker Size: About 52 Mm * 1/2.05 In*1 Speaker Power: 5W * 1 Charging Input: 5V / 500 Mh Frequency Response: 100 Hz - 20 Khz Power Supply Mode: Built-In Lithium Battery Shell Material: Plastic Speaker With Extra Bass Is Waterproof To Suit Your Active, Outdoorsy Lifestyle. Echo And Noise Cancelling Features For Calls.