[Bluetooth speaker with small palm but powerful sound] Impressive audio, full HD sound quality. Enjoy the impressive complete sound quality and powerful bass achieved with a 5W audio driver and passive audio subwoofer. [Wireless Stereo Pairing and Fast Charging] Through fast pairing, use two Dosmix M3s to double your audio experience. In addition, for such a small thing, it has extraordinary endurance. The ultra-high-density battery can play continuously for 2 hours at 80% volume, which is twice that of portable speakers of similar size. It only takes 1.5 hours to charge using the included Micro USB data cable. [Incredibly compact and metal case] About the size of a ring box, this speaker can fit almost any pocket or bag, jacket pocket or small side pocket of a backpack, so you can bring the sound to whatever you want The place. The weight is 120g and the size is 1.9D *1.3H. [Wide compatibility and durable nylon lanyard] Connect iphone, ipad, laptop, Android phone, Apple phone, tablet, laptop, Echo Dot, etc. with any device that supports NFC or Bluetooth (2.1 and higher) Connect and start your music. [High-definition call] High-definition hands-free call, built-in high-definition noise reduction microphone, clear speech quality