1、SUPERIOR SOUND QUALITY: The wireless Bluetooth speaker features a dynamic sound system design. With dual power and built in bass amplifier, it delivers deeply resonant low middle frequencies offering a richer, superior sound performance. 2、BLUETOOTH CONNECTIVITY: Equipped with a Bluetooth sound decoding chip, it supports pairing with Bluetooth devices like smartphones, tablets, TVs, and more to play music. It allows for a Bluetooth transmission range of over 10m / 32.8ft for a seamless listening experience. 3、MULTIFUNCTIONAL: The Bluetooth speaker supports convenient calling through a built in high sensitivity microphone for clear conversations. It also supports music playback from USB drives and memory cards with MP3 decoding, and can play music files of all MP3 bit rates. 4、FM FUNCTIONALITY: With built in FM radio module, the speaker automatically searches and stores radio stations. It's time saving and convenient to use. It also supports AUX input, providing you with the function of computer speakers. 5、EASY TO USE: Designed with a 57MM external passive radiator, the speaker showcases its potent internal energy. Experience and witness powerful bass, resilient in the face of rain. Transition smoothly between music and calls with just one touch. Item Type: Wireless Bluetooth Speaker Material: ABS Function: High power big speaker, heavy bass stereo sound Wireless Transmission Range: 10m / 32.8ft SNR: ≥90db Battery Capacity: 1200mAh Lithium Battery (built in) Built in Voltage: 3.7V Normal Volume Playback: 3H Speaker Specifications: 57mm/2.24 Speaker Power: 4Ω/5W x 1 Frequency Response: 120HZ to 20KHZ 1 x Wireless Bluetooth Speaker 1 x Charging Cable 1 x Sound Cable