Black Wireless Mini Keyboard & Mouse for VIZIO Smart TV E241I-B1 & E550I-B2 & E400I-B2 & M322I-B1 Ultra-thin keyboard and mouse set is ideal for use with SMART TV, laptop, PC etc. Set-up couldn't be easier, you simply plug the wireless receiver into your SMART TV and start using your keyboard and mouse right away without software. Suitable for use up to 10m away from TV screen. Water leakage type structure design. Low-profile, whisper-quiet keys ensure comfortable and quiet typing This product requires batteries which are included.