1. Optical resolution: 1600dpi2. Number of keys: 5 keys3. Wireless transmission frequency: 2.4GHz4. Operating distance: 10m5. Battery capacity: 500 mA6. Charging time: about 2 hours7. Life time: about 200 hours8. Dimensions: 113x57x25 mm9. Weight: about 66 grams10. Receiver: External receiver11. This mouse voice function only supports Win7/Win8/Win10/system12. Support voice typing/28 languages translation/voice control application/voice search

http://olla.gr/m103-1600dpi-5-keys-2.4g-wireless-mouse-charging-ai-intelligent-voice-office-mouse-support-28-languages-black/