Model: M20 Dimensions (W x H x D): 92 x 59 x 17.5 mm Weight: 145 g Screen Size: 3.0 inches (HD Display) Decoding Chip: ES9039Q2M Decoding Formats: PCM 32-bit/768kHz, DSD256 USB Port: Type-C USB 2.0 (Data, Charging, USB ) Output Ports: 3.5mm Headphone/Line Out + 4.4mm Balanced Headphone/Line Out Battery Capacity: 3000mAh Charging Time: Approximately 4-5 hours (recommended 5V 2A charger) Playback Time: 16 hours (Single-ended), 13 hours (Balanced) Bluetooth Version: 5.0 Bluetooth Transmit/Receive: /AAC// HD/ LL Storage Expansion: TF Card Slot, Supports 16GB-1TB (Recommended read speed: 130-180MB/s, high-speed cards) Audio Parameters Signal-to-Noise Ratio (SNR): 3.5mm PO/LO: 115 dB 4.4mm : 117 dB Total Harmonic Distortion + Noise (+N): 3.5mm PO/LO: 0.0011% 4.4mm : 0.0013% Output Level: 3.5mm PO/LO: 2 Vrms 4.4mm : 4 Vrms Output Power (Low Gain): 3.5mm PO/LO: 320mW 4.4mm : 445mW Output Power (High Gain): 3.5mm PO/LO: 480mW 4.4mm : 650mW Colour:Black Material:Aluminum Alloy Package Contents: 1 * M20 HIFI 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.