The spectacle has now work with my projector brand Optoma GT 750 .... Compared to the original spectacle is the field of view, that is the glasses higher, which is very pleasant ... The glasses also acts somewhat lighter and therefore I feel the colors are natural over ... Facilities: The glasses come in a sturdy box with glasses cleaning cloth and a protective cover ... the glasses are protected for transportation by a film ..... please remove !!!!! .. Then the glasses via included USB cable Rechargeable ... For battery life I can not say much ... but the first impression is super..die glasses has hinged bracket and also does not affect the material by worse than the original ..... at a price difference from the original glasses (ca . 60-90 purchase price) an absolute recommendation ... Get me order this model even as additional glasses ... #