Range 800m/1200m/1500m, Field of view 6.5°, Golf ballistic compensation function Yes, Flagpole lock function Yes, Yard(Yd), Continuous ranging function Yes, Power supply 1000mAh, Laser wavelength 905nm, Units of measurement Meter(m), Modes Duke Ranging Telescope DKW-S, Ranging error ±0.5m, Telescope objective aperture 25mm, Vision safety FDA (CFR21), Size 106x75mm, Ranging function Yes, Operating temperature 0-40℃, LCD monitor Through LED, Exit pupil diameter Eyepiece adjustment, Telescope magnification 6X.
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Aliexpress
There’re some similar (or not) items on Aliexpress
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Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($73.59): DealBGimpact
2. ($75.19): BG00c906
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGWAUI54, bGhOnEy10, bgshOOp10, BGDUKA826, BGKDWIO, BFFAKYT, BgoFErTaSchInA10, BGXIAOMI10TH, BG11FRET, BGDUKAD11, BGCDC087, BGf50344, BG3344ce, BGBICYCLES, BGbb18d8, BG677877, BG4d9120, BG02b46d, BG15b606, 00c906, BG34eceb, ADMITAD2212, 2022ACTIESNL, Terence, 8Couponsde, 8BGwbg2204, BG8OFFCOUPON, TTBLACK5
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi DUKA DKW-S Rangefinder 1200m ($-3)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi DUKA DKW-S Rangefinder 800m. The lowest price was: $49.59.
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)).