PREMIUM MATERIAL: This one handed keypad with knob is made of premium acrylic material, which is strong, durable and resistant to wear. ERGONOMIC DESIGN: This mini mechanical keypad also features ergonomic design which provides easier and more comfortable typing. RED SWITCH: This gaming keypad adopts mechanical structure and red switch, which ensures quicker response and longer service life. PROGRAMMABLE FUNCTION: This mini keyboard is programmable, designed with knob. Allowing you to freely configure keys and functions, improve work efficiency and comfort. DUAL MODE CONNECTION: This programmable keypad can be easily connected via USB cable or wireless BT, widely compatible with a variety of devices.