Water pressure: 2.2Mpa, Battery: 2500mahx 5 (included), Maximum inlet pressure: 0.5Mpa, Fast charge: 21V 1A, Rated pressure: high-grade 2.2Mpa energy-saving file: 0.8Mpa, Charging time: 2.5H, Water pipe length 6 meters, Rated flow rate: 3L/min, Flow rate: 180L/h, Material: PC + silicone + metal.
Aliexpress
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Here are coupons that you can use.
Updated: 03-09-2025
Banggood
Warehouse in China.
Link: Jimmy JW31 Handheld Flush Gun
$159.99 with coupon: BGJM159
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Check out price history chart (for all/most countries) for Jimmy JW31 Handheld Flush Gun. The lowest price was: $132.59.
Price records source(s): Gearbest, 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)).