Bluetooth transmission distance up to 10m, stable and fast connection Adopt advanced Bluetooth audio decoding chip to support the connection of all Bluetooth audio devices Support FM radio, you can search for radio stations directly in the listening area The sound is smooth, clear and dynamic, with different levels Can directly read TF card and U disk(not included) Support AUX audio input line, provide computer speaker function With waterproof cover to protect connection ports and charging port Can be directly connected to mobile phone/tablet via Bluetooth to play music, support hands-free calls 4400mAh large capacity rechargeable battery, provide long using and standby time Buttons control design, easy to operate With an adjustable shoulder strap for easy carrying Specifications: Bluetooth version: V5.0 Transmission range: less than 10M Sound to noise ratio: ≥90db Battery capacity: 4400mAh Built-in voltage: 7.4V Playing time: 8H~12H Speaker power: 4Ω/ 15 w * 2 Frequency response: 100hz-20khz Product size: 292 * 132 * 139mm Product weight: 1600 grams Charging voltage: 5V/2A EAN: 5714122430755