Bluetooth Connectivity Enjoy a stable and fast connection with Bluetooth transmission distance of up to 10m, supporting seamless audio streaming from any Bluetooth-enabled device Multifunction With FM radio function, support TF card and U Disk, also support AUX input function, convenient to use High-Quality Sound Performance Delivers smooth, clear, and dynamic sound with varying levels for a premium audio experience, whether you're listening to music or taking a call Hands-Free Calling Connect your mobile phone or tablet via Bluetooth to play music and enjoy hands-free calls, enhancing convenience Long-Lasting Battery Powered by a 4400mAh rechargeable battery, offering long usage and standby time, so you can enjoy music for longer Portable with Shoulder Strap Comes with an adjustable shoulder strap for easy carrying, perfect for outdoor activities or travel Specifications: Bluetooth version: V5.0 Transmission range: less than 10m Sound to noise ratio: andge 90db Battery capacity: 4400mAh Built-in voltage: 7.4V Playing time: 8H-12H Speaker power: 4andOmega /15Wx2 Frequency response: 100hz-20khz Product size: 292x132x139mm Product weight: 1600 grams Charging voltage: 5V/2A