Novel Engineering Glass as Speaker Diaphragms：Natural and authentic sound has always been our attempt and pursuit. Devoted into many breakthrough technologies, we use thin and tough glass (amorphous SiO2) as a sound radiation film. In this way, the performance of the speaker can be greatly improved. And we hope this new product can also bring you a different feeling.
IPX6 Waterproof: Born for outdoor adventures, the waterproof bluetooth speaker is covered with rugged and seamless material. You'll never have to worry about water splashes, rain, accidental spills, or dust while you're out (Not Submerged in Water).
Portable Handle Design: Take your tunes everywhere you go with a built-in handle and a flexible strap.
TWS Pair & Bluetooth 5.3: Easily TWS pair two ketelese speakers at the same time to enhances your audio experience, perfect for playing games, listening to music and watching movies. The latest Bluetooth 5.3 chip make sure the fast and stable wireless connection more than 10m away.
Additional Features: Flashlight mode creates the perfect atmosphere for any occasion; Drive the Beast function have loud and noisy sound with flashing light to drive the beast.

DK21 Portable Bluetooth Speakers