Acer projector, visible presenter, brand Acer

Projector video display by Acer brand, unused for a long time and kept in its original box. When I tested it, it works, but there are some dots appearing on the screen during video playback; I don't know what's causing it. Selling due to lack of use, has been stored in a cabinet for a while since we don't use it—might need some adjustment. Original price was 2150 SAR. Selling for highest bid starting at 750 SAR, one-third of the original price. Specifications: Brightness 2,500 Lumens (ANSI) / 2,000 Lumens (Eco) Resolution 800x600 Aspect Ratio 4:3 (SVGA) Contrast 4,000:1 (full on/off) Display Type DLP x 1 Color Processing 10-bit Video Modes 720p, 1080i, 1080p/60, 576i, 576p, 480p, 480i Data Modes MAX 1920x1080 Lamp Type 180W P-VIP bulb Lamp Life 3,000 hours / 4,000 hours (Eco) Lamp Model EC.K0100.001 Buy Replacement Lamp Included Lens 1.1x manual zoom, manual focus Optional Lenses No Lens Shift No Throw Distance 1.5 m - 12.0 m Calculate Throw Distance Image Size 86 cm - 770 cm Throw Ratio 1.95:1 - 2.14:1 (D:W) Digital Zoom Yes Digital Keystone Vertical only Projector Size 8 cm x 27 cm x 19 cm (HxWxD) Weight 2.2 kg Audible Noise 30 dB / 26 dB (Eco) Internal Speakers No Power 100V - 240V Connection Panel Composite: RCA S-Video VGA In: Dsub-15pin Note: For HD, it requires a converter that can be connected to it.