1-year manufacturer's warranty on the bulb, without limit on hours of use 5-year on the DLP chip Thanks to a special short distance lens, the Acer S1386WHn projects an image with native HD resolution and a diagonal of more than 2 metres at a projection distance of just 90 cm. The optional Acer Wireless Adapter can be used for wireless data transfer thanks to the HDMI/MHL ports. Acer PIN Security enables a PIN to be selected to prevent unauthorised use of the Acer projector. A forgotten PIN can only be reset by Acer Service after confirmation of ownership.