Keystone Correction ±15 Vertical (Manual), Projection Distance Range 1.38~5.7m, Max Supported Resolution 1080P, Language 23 languages, Imaging Technology BOE® 4.3″LCD, Recommended Screen Size 60-100 inches, Contrast Ratio 3000: 1, Projection Methods Support screen flip up and down left and right, Native Resolution(Pixels) 1280*720, Light Uniformity 90%, CPU Mstar® V56-Z1, Working voltage DC Input 90V-260V, Projection Size Range 45-200 inches, Brightness/ANSI 3200 Lumens/180ANSI, Lens Correction Manual Correction, DOLBY Digital NO, System Multimedia System TJUI 1.0, Display Ratio Screen Scale 4: 3/16: 9.
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Aliexpress
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Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($84.59): BGAProjector
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGA4300, aff7off, BG3CSUM, bgssaff9, BGPAYPALSS, BGaDmITAd, 7bcdf9, BGBR4300, BGCITYADS2019, bGpAnDacHeCk, Email5, BGAFF10OFF, bGhOnEy10, BGdragonBoat, bgshOOp10, BgoFErTaSchInA10, BGAFF7OFF, 7d18f7, 13f142, BGProjectors
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for BROOK A4300 Projector. The lowest price was: $82.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).