Bluetooth Mode: Supported Battery Life: About 7 hours Chip: Double ES9039Q2M Capacity: Single ended:380mW, Balanced end: 760mW Earphone Jack:3.5mm single ended/2.5mm balanced/4.4mm balanced Note:The front and back of the Z5c player are covered with protective film, which may appear to have scratches on it looking. In this case, simply remove the protective film and the scratches disappear. Product name:Z5c Dual ES9039Q2M HiFi Lossless Digital Music Portable Player Model: Z5c AMP: RT6863D Impedance: 32Ω Charging Port: Type-C Size: About 57x98x20mm Battery Capacity: 4200mAh Colour:As Shown Material:Metal Package Contents: 1 * Music player 1 * Charging cable Only the above package content, other products are not included. Note: Light reflection 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.