Features: Built-in microphone for hands-free calling. Experience high-quality audio with a high-quality audio decoder chip. Built-in rechargeable battery and built-in high-sensitivity microphone for listening to music anytime, anywhere. Unique waterproof design for bathrooms, beaches, swimming pools. When you are relaxing, you can relax and enjoy the wonderful music. Sucking on the back of an for iPad or other tablet becomes a stand. Special suction cup design that can be sucked into any plane, including tables, walls, and windows. Suitable for cars, bedrooms, washrooms, kitchens, offices, conferences, business trips, vacations, etc. Specification: Material: ABS Color: Black, White (optional) Bluetooth support: V 3.0 + EDR Range: 10 meters Transmission Frequency: 2.4G HZ Power Supply: DC5V / 100-120mA Battery: 3.7V 400mAh lithium battery Charging Time: approx. 3 hours Working Time: about 6 hours IP Rating: IP x 4 Frequency Response: 100HZ-20KHZ Output: 3W S / N. Proportion: > 75db Distortion: <1.0% package content Size: Approx. 85 * 85 * 45 mm/ 3.3 * 3.3 * 1.8 in Package Weight: 150 g Package list: 1 * Waterproof Bluetooth Speaker 1 * USB Charging Cable (supports Bluetooth and wireless transmission) 1 * Instruction Manual