Bluetooth 5.0 not only can listen to music, watch , suitable for sports wear, but also can be convenient to quickly link with mobile phones and transmit data. Real time translation, real-time display, built-in translator, travel abroad barrier free communication, reduce the trouble of voice barrier Large capacity lithium battery, high configuration lithium battery, longer endurance, farewell to frequent charging, whether in busy work or relax, the power is always on-line, let your life enjoy full power High appearance and large capacity, with 8GB large capacity configuration, plus support for the maximum 256gb capacity expansion, novels, music, learning materials, high-definition , whatever you want The video does not need conversion, supports full format playback, supports 720p1080p : Android Screen: 21:9 3.5 inch 480 x 800 high definition Press full screen Battery capacity: 1600mAh lithium electron polymer Storage: built in 8GB + external TF card expansion (256gb) Speaker: dual box multimedia HF | sound quality, supporting external extension Download format: support Android Market 99.9% app Playback format: full format is supported USB: bidirectional type-C Headphone interface: standard 3.5 earphone hole supports one button recording size:9.8x4.3x0.99cm Material:metal colour:Black Package Contents: 1 x host 1 x plastic sleeve 1 x protective film 1 x pin 1 x data line Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.