Support Bluetooth connection, FM radio function, back clip function, video playback, recording function, ebook function, picture browsing, alarm function, date and time function (including set time and set date), supported languages (English, German, Italian, Spanish, Dutch, Portuguese) Software language:Simplified Chinese, English and other languages Product weight:. 34g Display:1.77 inch resolution 128x160 Bluetooth:V5.2 Audio format: APE(Fast/Normal compression, 800Kbps-1000Kbps, sampling rate 8KHz-48KHz) FLAC(1000Kbps-1200Kbps, sampling rate 8KHz-48KHz) MP3(8Kbps-320Kbps, sample rate 8KHz-48KHz) WMA(5Kbps-384Kbps, sampling rate 8KHz-48KHz) WAV(32Kbps-1536Kbps, sampling rate 8KHz-48KHz) AAC-LC(8Kbps-320Kbps, sampling rate 8KHz-48KHz) Video format: 128x160(Conversion tool) Recording format:WAV Image format:JPG/JPEG/BMP Ebook format: document TF card expansion:less than equal 128G Charging specification:5V 1000mA Video format:128x160 (requires conversion tool) Ebook format: Battery:3.7V polymer battery Charging time:about 2 hours Note:Supported by the : /Windows/ os10.12 above. Type:16G Colour:Black Material:ABS Size:66MMx41.5MMx18MM Package Contents: 1 * data cable 1 * headphone 1 * MP4 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. Sports Back Clip MP4 MP4 recorder Sports clip recorder