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- Functions: card insertion, radio, voice prompt Connection mode: Bluetooth connection Interface type: USB Frequency response range: 80HZ-18KHZ Output power: 20~30W Power supply mode: built-in lithium battery Playback duration: 6 hours Extended storage: 32GB Effective distance: 10m Operation mode: key Display screen: Yes Playback format: MP3 Support APP: No Supported formats: USB flash disk+TF card Radio function: Yes Waterproof grade: non waterproof Built in battery capacity: 2000mA - 4000mA Battery capacity: 3.7V 18650 1500mAh Support TF card, USB, color atmosphere light Equipped with advanced features such as card insertion, a radio, and voice prompt, this Bluetooth speaker offers impressive sound quality, with a frequency response range of 80HZ - 18KHZ and an output power of 20~30W. Enjoy up to 6 hours of playback, plus 32GB of extended storage capacity and a waterproof grade of non-waterproof. Enjoy sound from up to 10 meters away, with a built-in battery capacity of 2000mA - 4000mA, plus a 3.7V 18650 1500mAh battery. This speaker supports USB flash disk+TF card, color atmosphere light, and other playback formats, including MP3.