Fully functioning, brand new and durable replacement remote control, works out of packaging | Well responsive to every key press, ensuring the projector operates as expected without any hassles | A perfect replacement to your old or lost remote control; less cost with solid quality and better usage experience | Requires 2 AAA batteries (NOT Included); For use with Optoma BR431, DH1012, EH341, HD39HDR, HE35, W316ST, W316ST-SA, W351, W402, X316ST, X351, X402 projectors | Warranty as long as 12 months (From Date of Purchase); Professional and nice customer service: messages will be replied by well-trained support team within 24 hours