$20.69 – Receive Distance: ≥80M, USB Receiver Size: 8×2.5cm, Power supply: 2x AA battery (not included), VHF Frequency Range: 268.85mhz (with screen), Audio Dynamic Range: >100dB, Audio cable length: approx. 60cm, Color: Black, Audio Frequency Response: 40Hz-15KHz, Microphone Size: approx. 24.5x5cm, Transmitter Working Current: <80mA, Audio Output: 0-200mv, Material: Plastic+Metal, Operating temperature: -10 - 50℃.
I have checked all old coupons and price is $20.69 for Professional UHF Wireless Microphone With Receiver (in Banggood). Price history, coupons and price alert are available on this page. What is best price?
Latest coupon code price check (UTC time):
Banggood ($20.69)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. Well, is it a good price anyway? From what I can see this price is higher than average price ($16.26).
Link: Banggood product page
Price: $20.69
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGAUDIO, BG1b5830, BGAudio3, BGAudio9
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Professional UHF Wireless Microphone With Receiver? There we go. The lowest price was: $10.19.
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)).