The floating bluetooth speaker has a perfect blend of mobile power and acoustic technology. With built-in high capacity battery， it can play music up to 15 hours. It is water rasistant. Whether you are in the swimming pool， bathroom or office， you can use it to listen to music and answer the call conveniently. The portable bluetooth speaker is also your best choice for travelling.  Features:  The music box can float on water or be fixed on the wall， helping to enjoy music at anytime and anywhere.  Multifunctional， can be used as power bank.  IP67 water resistant， provide you relaxing music bath time and pool time.  Support A2DP， a built-in 5W speaker， relax you by perfect bluetooth music.  Built-in microphone and hands-free function for clear voice call.  Provide 15 hours long-time music playing， support high-quality stereo sound.  Lightweight， portable and durable.  Specifications:  Bluetooth version: V4.0  Working distance: 50 meters   Water resisitant level: IP67  Shell material: ABS + UV  Battery type: 18650 Lithium battery 2200mAh 3.7V (included)  Frequency response: 2.400GHz — 2.480GHz  SNR: ≥ -91db  Audio distortion (HTD + N): ≤ 1%  Charging voltage (IN): DC 5V ± 0.5V  Charging voltage (OUT): 5V / 2A (Used as power bank)  Charging time: 4 — 5 hours  Operation time: Over 10 hours  Operation temperature (℃): -10 — 60  Storage temperature (℃): -20 — 70  Item weight: 345g / 12.19oz  Package weight: 484g / 1.06Lb  Package size: 16 * 9.5 * 9.5cm / 6.30 * 3.74 * 3.74in (L * W * H)  Package List:  1 * Bluetooth speaker  1 * Sucker  1 * USB charging cable  1 * User manual (English)