Specification: Brand Name: xDuoo Battery Life: 10 - 20 hours Audio Format Support: AAC, AIFF, FLAC, WMA, MP3, WAV,DSD,ALAC,APE,OGG Balanced Out: No Supports Recording Function: No Supports FM: No Package: Yes Model Number: XDUOO X10 Battery Specification: Lithium Battery Screen Size: 2.0 inches Storage Type: Flash Memory Screen: Yes Signal Noise Ratio: ≥89dB Operation Mode: Touch Tone External Memory: Yes Have Speakers or not: No Signal Noise Ratio: >89dB Operation Mode: Touch Tone Product description: Display screen: 2.0 inch, 240*320 Output power: 240mW (32Ω load) Frequency response:20Hz-20KHz(±0.5dB) Crosstalk: >70dB THD+N: 0.0016% S/N:112dB Line output Crosstalk: >100dB Line output S/N: ≥112dB Playback time: >9H Charging time: <4H Size: 53*107.5*16.5mm Weight: 141g Color selction: Black