WindowsXP/7/8.1/10/MacOSX10.13 or later hardware Elecom Wireless Thin Numeric Keypad 20 Key [TK-TDP019BK]

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Specifications
Connector shape : USBMale
Compatible models : Windows OS and macOS with USB port
Compatible OS : Windows 10, Windows 8.1, Windows 7, Windows XP, macOS HighSierra (10.13) * You may need to update to the latest version of each OS.
Communication method : GFSK method
Radio frequency : 2.4 GHz
Radio range : maximum approx. 10m
Key type : Pantograph
Key arrangement : 20 keys
Key pitch : 19.0 mm
Key stroke : 2.0 mm
Power source (keyboard body) : one of AAA alkaline dry batteries, AAA manganese dry batteries, AAA nickel hydrogen secondary battery
Estimated battery use period : approx. one year when using alkaline dry batteries
External dimensions (keyboard body) : approx. width 89.6 mm x depth 127.5 mm x height 21.5 mm
Mass (keyboard body) : approx. 100g * Battery not included
External dimensions (receiver) : approx. width 19.5 mm x depth 15.7 mm x height 6.5 mm
Mass (receiver) : approx. 2g
Accessories : receiver unit x 1, user manual x 1 (not included in assessment), AAA alkaline dry batteries for operation confirmation x 1 (not included in assessment), box (not included in assessment)