Output power: 25mW: 100mA/200mW: 200mA/400mW: 250mA/600mW: 320mA@12v, Weight: 4.6g(excluding antenna), Power supply: 5v camera@under 0.3A max, Port connector: JST, Dimensions: 26(W)x26(D)mm, Extra feature: Smart Audio/PIT Mode, 20x20mm(hole), Range: Up to 2km with omnidirectional RHCP antenna, Antenna connector: MMCX, Input voltage: 7-24V, 6pin.
Go down and check coupons out. Remember to check price history if it is available. What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
AKK FX3-ultimate 5.8G 40CH 25/200/400/600mW Switchable Audio Transmitter Support OSD for RC FPV Racing Quadcopter | $40.52 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGAKKFX3, BGBCFPV, Parts8, BGBCBG10, BGAKK15, BGOTC21, BGBFAFF2019, BGCITYADS2019, 2020CNY, BGVDay10%off, bGhOnEy10, BGTRYY, BGTT10, BGAFF7OFF, BGCuponation10, BGDAVIS
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – AKK FX3 FPV Transmitter [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for AKK FX3 FPV Transmitter. The lowest price was: $15.74.
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)).