KB560S Laser Projection Bluetooth Keyboard(Black)

1. Material: ABS, electronic components, metal2. Keyboard layout: QWERTY3. Light source: red laser4. Projection size: width: 250mm, height: 100mm5. Working platform: non-reflective, opaque plane6. Recognition rate: 350 words/minute7. Built-in battery: 3.7V, 700mAh8. Battery working time: about 120 minutes9. Battery charging time: about 120 minutes10. Charging power supply: USB input/5V 1A11.Bluetooth: V3.0, HID PROFILE VER 1.012. Frequency range: 2402-2480MHZ13. Channel: 7914. Modulation method: GFSK15. With gesture function, it is more convenient and quick to use16. Dimensions: 7.8 x 4.0 x 1.9 cm17. Weight: about 60 grams