Darmoshark K3 Pro 19-K Numeric Keypad Triple Mode 2.4G/BT5.0/USB-C Wireless BT Mechanical Numeric Keyboard 19 Keys Mini Numeric Keyboard Portable RGB Backlit Gaming Keyboard Extended Keyboard Features: Multi-scenario application: This 19-key mechanical numeric keypad is designed for various usage scenarios, whether it is daily use or professional needs, it can meet your needs. Powerful function: The FN combination key supports a variety of functions, including combination function, factory reset, BT pairing, device switching, etc., which is simple and convenient to operate. Ergonomic design: The keyboard adopts an ergonomic slope design, which can effectively relieve fatigue from long-time input. Three modes of connection: It supports wired, BT5.0, and 2.4G three modes of connection, meeting your different usage needs. RGB backlight: It supports 16.8 million kinds of custom colors, making your keyboard more unique. Full-key hot-swappable: It supports full-key hot-swappable, making it easy for you to replace the key axis. Portable design: The USB cable of the keyboard is detachable, making it convenient for you to carry and use. Specification: Color: White Material: ABS Number of keys: 19 Keys Keycap: Two-tone ball cap Operating Voltage: DC5V+ 5% Operating current: 250MA max. Connection method: Wireless / BT5.0 / Wired Shaft: Supports full-key hot swap Button life: 50 million times Li-ion battery capacity: 1000MAh 3.7WH System Support: Windows XP / Vista /Win7 /Win8 / Win10 / Macintosh OS Product Size: 366*141*44mm Product Weight: 255+10g Package Size: 17*15*5.6cm  Package Weight: 0.4KG Package list: 1* Keyboard 1* User manual 1* Charging cable 1* Shaft puller