Function: card, voice prompt, call function Applicable scene: car, desktop, fitness, outdoor, home, mobile portable, karaoke, live broadcast, broadcasting system, outdoor lawn Horn Type: Bluetooth-compatible Speaker Connection: Bluetooth-compatible connection Interface Type: USB Frequency response range: 20Hz-20KHz Output power: 30~60W SNR: 80dB Power supply mode: built-in lithium battery Sound channel: 2.1 1 Play duration: 4 hours Effective distance: 10 meters Operation mode: button Applicable to the crowd: general Playback format: MP3,WMA Shell material: metal Speaker adjustment mode: button Color: blue, black, red, gold, silver gray, rose gold Specifications: Bluetooth, Bluetooth can be inserted card Power mode: USB Shell process: metal oxidation Built-in battery capacity: 300 mA -500 mA Battery capacity: 300MA Bluetooth-compatible protocol: 5.0 Specifications: 1.Bluetooth-compatible pluggable card portable metal subwoofer, small size, large capacity, bring you shocking bass. 2. HD subwoofer design, HiFi sound, bass surround, shock experience, give you the real feeling of immersive. 3. Wireless Bluetooth-compatible connection can be inserted into the card, two use modes for you to choose. 4. Built-in high-capacity rechargeable polymer lithium battery, lasting life. 5. Support series playback, two speakers after the boot couplet, can achieve 3D surround sound. 6. The volume is more mini than you think, does not take up space, easy to carry. 7. Compatible with all kinds of Bluetooth-compatible devices, compatible with Android, IOS and other intelligent platforms, you can freely connect with your mobile phone, IPAD, notebook, PSP and other digital devices. 8. Built-in high-definition noise reduction microphone, support two-way voice calls, call number, hands-free calls. 9. Suitable for car, desktop, fitness, outdoor, home, mobile portable, K song, live broadcast, broadcast system and other scenes, enjoy music anytime and anywhere.