Tech specs: Bluetooth Version: 5.0 Dimensions: 102 × 60 × 14mm (4 .0″×2.36″ ×0.55″) Weight: 175g (6.17oz) Display: 2.4 Inches 240*320 IPS Display Built-in Storage: 32GB Charging Port: Type-C Battery Capacity: 1500mAh Headphone Outputs: Dual 3.5mm Jacks (Stereo) Playing time: 90 hours continuously Music Format: APE, FLAC, MP3, OGG, AAC, ACELP, WMA, WAV, M4A Recording Format: MP3, WAV Picture: JPEG, BMP, GIF E-book Format: TXT FM Receiving Frequency: 87.5MHZ~108MHZ Video Format: AMV, AVI (need to convert format) Expansion Slot: Micro SD/TF Card (up to 256GB)