IP67 WATERPROOF and DUSTPROOF: C16 Waterproof bluetooth speaker is not only IPX7 waterproof, but also dustproof. Can be submerged underwater to 1 meter for 30 minutes. Surprisingly it can also float on water. To be used as the perfect shower speaker, beach speaker, outdoor speaker. POWERFUL SOUND WITHOUT DISTORTION: Although C16 bluetooth speaker has a ultra-compact size, it can provide you with crisp and clean sound without distortion. Additionally has a microphone installed, so you can make a high-quality phone call with perfect sound by clicking once the play button. STEREO PAIRING for MORE IMMERSIVE MUSIC: With true wireless pairing function, you can connect two speakers via Bluetooth to experience synchronized setero sound. Advanced bluetooth 5.0 technology to provide faster and more stable conection. LONG BATTERY LIFE: Built-in rechargeable battery supports up to 20 hours of playtime at medium volume under a full charge. This portable speaker can hang with you all day and night. And it can be fully charged in 2.5 hours via Type-C cable. Ultra-PORTABLE DESIGN: Weight only 195 grams, this small speaker allows you to take it anywhere. Plus, the durable waterproof fabric material and rugged rubber housing are ready for all outdoor adventurers.