Q3 2.4G Mini Wireless Office Digital Keyboard Cash Register Financial Accounting Password Keypad 1. Material: ABS 2. Number of keys: 20 keys 3. Key technology: Palace column structure 4. Connection method: USB wireless connection 5. Interface: USB 6. Key resilience: about 65gf 7. Power supply: 1 AAA battery (not included) 8. Operating ambient temperature: -40-55 degrees centigrade 9. Button operating pressure: 50-350 gcm 10. Weight: about 147 g 11. Dimensions: about 13.5 x 8.7 x 3.5 cm 12. Packing list: product, receiver Features: 1. Digital keypad, slim and portable, multimedia keys with waterproof function 1. Plug and play device, no driver needed, USB port required 2. Support ergonomic design, light and comfortable hand feeling, fast response time, improve work efficiency 3. Full-size keys increase speed and accuracy by making it easier to locate and press the number youre looking for 4. Digital keyboard supports numlock, tab, delete and other keys, with shortcut keys, you can directly open the computer calculator 5. Anti-slip silicone feet, stable and easy to use, reduce the chance of pressing the wrong button 6. Widely compatible with PCs and desktops with Windows and iOS operating systems