Mini Bluetooth-Compatible Speaker With Custom Ba Radiator, IPX7 Waterproof, Super Portable Speakers, Travel Case Packed Gifts Description: Product Name: Sling Bluetooth Speaker Battery specifications: built-in battery 500mAh lithium battery Size: Approximately 10*10* 4cm Material: ABS plastic (plating ring) Input: DC/5V Connection method: Bluetooth connection Interface type: USB Frequency response range: 40Hz-20KHz Output power: 3W Signal to noise ratio: 75dB Transmiion range: 10 meters Weight: about 150g Style: stylish and convenient Color: black, gold, silver, red, blue Function: Bluetooth, 1+1 serial, FM radio, AUX direct connection, TF extension, hands-free call Specifications: Features: -Outdoor dustproof, waterproof and drop-proof portable bluetooth speaker. Dustproof: precise body design, adapt to harsh environment, effective dustproof. -Anti-drop: Anti-drop silicone is used around the body shell. The construction proce is rigorous, anti-vibration and abrasion resistance. -Enjoy high-quality HIFI stereo stereo sound cavity structure with clear sound. -Small and portable, long battery life, convenient and practical. -A variety of colors, any choice. Package Included: 1*Sound + 1*Charging cable