It’s advanced 2.4 GHz powerful wireless connection with distance up to 10-15m.It also has Adjustable 4-level Power Saving. It will be in sleep mode in 0.2s of inactivity. Anti-slippery belt design provides with an enhanced grip to ergonomic and comfort fit. Its adjustable resolution 1000/1600/2000 DPI. Its extreme quality offer over 5 million clicks guaranteed. 8 gestures to perform selectable hotkey commands. Switch button on the back make this wireless mouse to perfect on-the-go companion. Sleek Round Square keycaps enhances your typing area for accurate typing. One touch to access 12 multimedia & internet functions with FN+ F1 to F12. Ensure you will never loose key identity. The drain holes are designed to prevent the keyboard from liquid spill off. High-elasticity silicon membrane for fresh and comfort typing experience. A4tech wireless keyboard and mouse combo price in BD .This combo series has 01 year warranty .