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 $899 By ARCOM - 4 June 2020 144 0 SHARE Facebook Twitter Go to the deal page: Optoma Refurbished Projector Sale: Optoma UHD51A Amazon Alexa 4K 2400 Lumens Projector $899