Product instruction: 1. 2.4 GHz wireless technology delivers a reliable connection with up to a 10M range.No wires make a more smart and tidy desktop. Unified nano receiver saves precious computer USB ports 2.Very resposive keys in scissor-key-switches.Angled tilt provide support.Silky-smooth whisper-quiet keys let you enjoy the work without disturb 3.Real compact and slim in fullsize design.The keyboard size is 5.5*2.16*14.6in which greatly save space for your desk top and travel.You will type in more fast way with numeric keys 4.Low power battery indicators and multi-media hot keys provide convenience 5.Quiet keyboards and mouse set.The mouse are provided in silent clicking; no disturbance to you and others.Keyboards keys in low profile make much less noise when typing Specifications： Keyboard Specifications Keyboard size: 283*112*(22-10)mn Number of keys: 78 keys + 10 keys Key Type, Chocolate Key Cap Key life: approximately 5 million cycles specifications: 2.4GHz Non-continuous reception range: 10 m System support: Windows 7, B, 10.XP, Vista, etc. or higher. Keyboard weight: 220g press Power supply mode: 2 AAA batteries Connection type: USB wireless receiver Mouse Specifications Standard size, 120*60*25mm Number of keys: 4D Key life: approximately 3 million cycles specifications: 2.4GHz Wireless reception range: 10 meters System support: Windows 7, 8, 10.XP, Vista, etc. or higher. Mouse weight: 60g Resolution：800/1000PI Power supply mode: 2 AAA batteries Connection type: USB wireless receiver PS：Plug the receiver into the battery before trying it out. Package includes 1x Wireless Bluetooth Keyboard (Battery not included) ​1x Mouse 1x User Manual 1. 2.4 GHz wireless technology delivers a reliable connection with up to a 10M range.No wires make a more smart and tidy desktop. Unified nano receiver saves precious computer USB ports 2.Very resposive keys in scissor-key-switches.Angled tilt provide support.Silky-smooth whisper-quiet keys let you enjoy the work without disturb 3.Real compact and slim in fullsize design.The keyboard size is 5.5*2.16*14.6in which greatly save space for your desk top and travel.You will type in more fast way with numeric keys 4.Low power battery indicators and multi-media hot keys provide convenience 5.Quiet keyboards and mouse set.The mouse are provided in silent clicking; no disturbance to you and others.Keyboards keys in low profile make much less noise when typing