Portable, compact wristworn design that stays unobtrusive during activities such as running, sports, and other outdoor pursuits. B90 Wristwatch integrates a loud Bluetooth speaker into a comfortable wristwatch form, providing music playback without the need for additional devices. Supports TF memory cards for extended local music storage and offline listening. Function and performance Builtin speaker delivers audible sound directly from the wristwatch. Bluetooth connectivity enables wireless playback from Bluetoothenabled devices. TF card storage expands music library on the device itself. Compatibility and design Works with Bluetoothenabled devices for easy pairing and music streaming. Compact wristwatch size designed for allday wear without interference. Comfortable wristband design suitable for active use. Use scenarios While running or exercising, enjoy music hands without carrying extra gear. During outdoor sports or workouts (cycling, hiking, gym sessions), keep your soundtrack accessible on the move. For casual outdoor activities or travel, use as a compact, selfcontained music source.