AUN A004 Pro 1920 x 1080P 9000Lumen Android 9.0 Portable LCD Projector 1. Optical parameters Display Technology: 4.0inch LCD Screen Brightness: 9000Lumen 350ANSI Native Resolution: 1920x1080 Pixels Max Supported Resolution: 4K Light Uniformity: 90% Contrast Ratio: 2000:1 2. Projection Parameters Throw ratio: 1.33:1 Projection Distance Range: 1.39-6.80m Projection Size Range: 47-250 inches Recommended Screen Size: 60-100 inches Aspect Ratio: 4:316:9 Keystone Correction: Electron Trapezium +- 15 degrees Projection Methods: FrontRearFront CeilingRear Ceiling Lens Correction: Electric Focus Speaker: 4ohm 5Wx1 Noises: no more than 35dB 3. System parameters Android version: Android 9.0 Main chip: HiSilicon352 RAMROM: 1GB+8GB WiFi: 2.4G+5G Bluetooth: BT5.0 Remote Control: IR WI-FI Display: Support OSD language: Chinese, English, Russian, French, Spanish, Portuguese, German, Arabic, etc. 4. Interface USBMax ROM: Support USB Max Support 128G Input: Power port x 1, USB x 1, AV x 1, HDMI x 1 Output: 3.5mm Audio Earphone 5. Power Parameters Input Voltage: AC 110-240 50-60Hz Operating Power Consumption: 65W 6. Product Pecification Dimensions: 241.2x209x98mm Weight: 1.7kg 7. Packing Including 1 x Projector 1 x User Manual 1 x Remote Control 1 x Cleaning Cloth 1 x Dust Cover 1 x Power Cable 1 x AV Cable