Feature: 1. Triple Mode: This office mouse supports dual BT5.1 connection and 2.4G wireless connection. Stable BT and USB wireless support 3 devices connection, so you can easily switch. 2. Ergonomic Design: This wireless mouse with side buttons features ergonomic design, which ensures comfort and accuracy, relieving hand fatigue. 3. 4 DPI: This laptop mouse provides 4 adjustable DPI(1000/1600/2400/4000), providing accurate and stable control, greatly improving your work efficiency. 4. Adjustable Volume: This gaming mouse is able to control volume via long press the DPI button for 2 seconds, then rolling the scroll wheel to adjust the volume. 5. Silent Click: This ergonomic mouse also adopts silent design, thus the click noise will be reduced by 90%, perfect for home, office, cafe, and other public places. Specification: Item Type: Wireless Mouse Material: ABS Connection Mode: 2.4G+BT1+BT2 Triple Mode Battery Type: Lithium Battery Battery Capacity: 500mAh (Battery Included) DPI: 1000, 1600, 2400, 4000DPI DPI Light Mode: Red (1000), Green (1600), Blue (2400), Purple (4000) Light Mode: Colorful Breathing Light Effect. Package List: 1 x Wireless Mouse1 x Charging Cable1 x User Manual1 x 2.4G Receiver