I purchased this about three years ago. I've used it a few times, but I'm selling it because I don't use it anymore. I'm also selling a tripod with adjustable angles as a set. Product Specifications Size: Height: approx. 13.1cm | Length: approx. 6.5cm | Width: approx. 6.5cm Compatible OS: Android 7.1 Communication Standard: Bluetooth 4.2 Charging Time: About 2 hours (with 15V-3A input) Projection Modes: Front projection, rear projection, ceiling front projection, ceiling rear projection Interfaces: HDMI: HDMI 1.4 (up to 1080p input) USB: USB 2.0 Software: OS: Android 7.1 Operating Modes: Projector mode, Bluetooth speaker mode Video Playback Time: About 4 hours (when using battery mode) Music Playback Time: About 30 hours (when using Bluetooth speaker mode) Charging Time: About 2 hours (with 15V-3A input) Video Formats: H.264 BP / MP / HP - up to 1080p, MPEG-4 SP / ASP - up to 1080p, DivX 4x / 5x / 6x - up to 1080p, H.263 P0 - WVGA, VP8 - 1080p Speaker: 6W Wi-Fi: 802.11a / b / g / n Dual Frequency: 2.4 / 5GHz Bluetooth Standard: 4.2 Display Technology: DLP, 0.2inch DMD Resolution: 854 x 480 pixels Brightness: 200 ANSI lumens Lamp Life: Approximately 30,000 hours Light Source: LED Throw Ratio: 1.3:1 Keystone Correction: Vertical (auto / manual), Horizontal (manual only) Infrared Remote Control: Direction pad mode / Mouse mode Dedicated App: Nebula Connect for Android & iOS Package Contents: Nebula Apollo, power adapter, remote control (with battery), quick start guide Thank you. Nebula Apollo D2410511 (DLP method, 200 ANSI lumens) Brand: Anker Projector Features: Portable, Pico Projection Method: DLP Aspect Ratio: 16:9 Video Terminals: HDMI terminal, USB Projector Functions: Distortion correction, Keystone correction, Wi-Fi, Bluetooth, Built-in speaker Weight (kg): 0.579 kg