Product Product size:About19cm*7cm*7cm Capacity:800MAH Materials:Plastics+Metal Batteries:18650Aluminium battery Connection method: Bluetooth Color: black, red Function: insert card, waterproof, radio, dustproof, anti-drop, voice prompt, call function Package content: 1*Bluetooth speaker, 1*Strap, 1*Charging cable 1.EXTRA LOUD: Rich stereo sound, deep bass, accurate mids, and clear highs provide powerful bluetooth audio without any distoration , IPX-5 water resistant speaker perfect for any room or outdoors. 2.Easy to carry: Take this bluetooth speak anywhere with ease. Each speaker comes with a convenient carrying strap, perfect for traveling. 3.WATERPROOF: With a IPX5 rating, this speaker can be used in the shower. And gives protection against rain, snow, splashes, and spills. 4. MULTIPLE MODES: Built in Bluetooth 4.0 provides extra long wireless range, higher quality, and faster connection. Includes Micro-SD card slot, 3.5mm audio in \u0026 radio functionality to provide you with more listening options. 5.Durable: Metal material is shockproof, non-slip and waterproof and protects against scratches, breakage and dirt.