Home Projectors Optoma Refurbished Projector Sale: Optoma UHD51A Amazon Alexa 4K 2400 Lumens Projector... Projectors Optoma Refurbished Projector Sale: Optoma UHD51A Amazon Alexa 4K 2400 Lumens Projector $929 By ARCOM - 7 May 2020 122 0 SHARE Facebook Twitter Go to the deal page: Optoma Refurbished Projector Sale: Optoma UHD51A Amazon Alexa 4K 2400 Lumens Projector $929