Screen Size: 1.77 Inches (inches) Storage Card Type: TF Card Expansion Card: Not Supported Operation Mode: Button Type Interface: USB 2.0 Headphone Jack: 3.5MM Screen Color: Color Screen Screen Resolution: 160128 Additional Functions: Support Bluetooth-compatible, Picture Browsing, FM Radio, Recording Function, External Speaker Function, E-book Reading Battery Type: Lithium Battery Battery Life: 10 Hours (hours) Applicable People: General Specifications: 1. Multifunctional 1.8-inch Screen Sports Back-clip MP3 Player, 1.77-inch Large Color Screen, Clearer Viewing Experience 2. Built-in Speaker, Built-in Microphone, Lossless High-fidelity Music Player, Supports Multi-format Music Playback And Lyrics Synchronization. 3. Strong And Durable, The Front Of The Screen Is Made Of Tempered Glass To Prevent Scratches. 4. Support Memory Expansion, Support Up To 128GB Micro-SD Card. 5. Support Recording, Alarm Clock, Video Playback, Photo Album, E-book, And External Speakers. 6. The Player Can Be Firmly Fixed On The Shoulder Strap Or Pocket T-shirt, Which Is A Good Companion For Dancing Fitness, Leisure And Entertainment, Hiking Cycling, Running And Fitness. Package Included: 1* (1 Walkman)