Features: 1. Uses high-quality chips for stable performance. 2. Built-in 220mAh lithium battery provides up to 50 hours of operation. 3. Includes a Micro USB cable for charging; full charge in approximately 4 hours. 4. Sleep function automatically activates power-saving mode after 15 minutes of inactivity. 5. 59-key layout with 14 dedicated shortcut keys. 6. Keys feature UV-coated screen printing, durable and resistant to fading after extensive use. 7. Brushed surface finish offers a premium texture and appearance. 8. Scissor-switch key mechanism ensures sensitive typing, fast response, and comfortable feel. 9. Dimensions: 248mm x 150mm x 4mm 10. Weight: 450g Specifications: 1. Modulation mode: GFSK 2. Operating voltage: 1.8–3.6V 3. Charging time: 4 hours 4. Battery capacity: 220mAh 5. Battery lifespan: Up to 3 years 6. Standby time: 30 days