Fangrui Product Details Time And Date Settings. Built In Speaker And Microphone. Up To 8 Hours Of Extended Battery Life. Lossless And High Fidelity Music Player. Support Multi Format Music Playback And Lyrics Synchronization. Mini Design, With A Screen Tempered Glass On The Front To Prevent Scratches. Lightweight And Portable, Easy To Put Into Your Pocket, No Burden, And Worth Having. Supports Memory Expansion And Supports Micro-sd Card Expansion Cards Up To 128gb. Support Recording, Alarm Clock, Video Playback, Electronic Photo Album, Time Display, And External Speakers. Mini Personal Stereo, Dance Fitness, Leisure And Entertainment, Mountain Climbing And Cycling, Suitable For Various Environments. Wonderful Wireless Connection, Using Bluetooth 5.0, Can Connect Audio Devices Such As Bluetooth Headphones And Bluetooth Speakers, Providing More Stable Connection And Better Sound Quality. Operation:button Memory Card Type:micro-sd Card (not Included) Charging Interface:micro-usb Headphone Interface:3.5mm Dual Channel Stereo Suppo