1、Using DLP display technology, 4K HD decoding, makes you see clearer. 2、Positive and negative 45 degree vertical trapezoidal correction. Support wireless with the same screen. 3、Support HDMi HD input, connect to computer, can realize projection screen and computer screen synchronization. 4、Dual-band WIFI 4G/5G can effectively avoid signal interference and fast transmission speed 5、Support Bluetooth 0, can connect Bluetooth speakers. Features:  1. Using DLP display technology, 4K HD decoding, makes you see clearer. 2. Positive and negative 45 degree vertical trapezoidal correction. Support wireless with the same screen. 3. Support HDMi HD input, connect to computer, can realize projection screen and computer screen synchronization. 4. Dual-band WIFI 2.4G/5G can effectively avoid signal interference and fast transmission speed 5. Support Bluetooth 4.0, can connect Bluetooth speakers. 6. The touch pen can control the projector, office, lecture and more methods. 7. For Android 6.0 operating system, for Cortex-A53 CPU. 8. Built-in wear-resistant coated glass lens and high-quality LED bulb ensure bright and stable screen. Specification: Remote Control Battery: AAA x 2 (Not Included) Product Model: P10 PIus Display Technology: DMD Technology Light Source: RGB LED Resolution: 854x480 Brightness: 150LM Aspect Ratio: 16:09 Effective Focal Length: 6.5 mm Focusing: DMD Technology Light Source: Manual focus in sliding adjustment Keystone Correction Vertical: ±45 degree Projection Distance: 0.5m to infinite Image Size: 31inch Offset: 100% Throw Ratio: 1.4 Contrast Ratio: 500:01:00 Distortion: ≤ 1.5% Uniformity (JBMA.): 80% Color Saturation: 100% NTSC LED Life: 10,000 hours Operating Temperature: 0~50℃ OS: for Android 6.0 CPU: For Amlogic S912 Octa core ARM Cortex-A53 CPU up to 2GHz (DVFS) GPU: ARM Mali-T820, GPU up to 750MHz (DVFS) RAM: 2G ROM: 16G WIFI: 2.4G/5G Wifi Bluetooth: BT 4.0 Ethernet: Ethernet 10/100M  Built-in Battery: 7.4V 4100mah Remote Control: Support (IR)infrared Screen Mirror: For eshare/imirror/miracast Offic Software: For Word/excel/PDF (depends on APK install) Video/Picture Codecs: VP9-10 Profile-2 up to 4Kx2K@60fps H.265 HEVC MP-10@L 5.1 up to                                        4Kx2K@60fps H.264 AVC HP@L 5.1 up to 4Kx2K@30fps H.264 MVC                                       up to 1080P@60fps                                       MPEG-4 ASP@L5 up to 1080P@60fps(ISO-14496) WMVA/C-1                                                  SP/MP/AP up to 1080P@60fps                                      AVS-P16(AVS+) /AVS-P2 JiZhun Profile up to 1080P@60fps                                      MPEG-2 MP/HL up to 1080P@60fps (ISO-13818) MPEG-1 MP/HL up                                        to 1080P@60fps (ISO-11172) RealVideo 8/9/10 up to 1080P@60fps                                             WebM up to VGA                                     Multiple language and multiple format sub-title video support                                     MJPEG and JPEG unlimited pixel resolution decoding (ISO/IEC- 10918).                                   Supports JPEG thumbnail, scaling, rotation and transition effects                           Supports .mkv,.wmv, .mpg, .mpeg, .dat, .avi, .mov, .is o, .m p4,  .rm and .jpg file 1xTF Card: Max 32G  1xHDMI: HDMI Input 2xUSB: 2X USB 2.0 1xRJ45: 10/100M  1xEarphone: Audio output, 3.5mm joint (can connect with earphone or speaker box) Package List: 1 x Projector 1 x Power Adapter 2 x Touch Pen 1 x User Manual 1 x HDMI Cable 1 x Remote Control