Size (W)x(H) 90x 110mm /4x 4inch(appr.), Remote distance 1000m(Barrier-free), Charger Voltage 100-240V, Charge time 3-5 hours (Automatic charge management), Material Plastic, Working hours 15-20 hours (Fully charged), Sensitive impedance 4Ω 3inch speaker, Model E76, Thickness 35mm /1inch(appr.), Max. Output Power 35W, Working Voltage 7.4V 2200mAh (li-ion battery), External power DC 10V 450mA/50Hz, Plug Type US, Function FM Radio / MP3 Player / Hunting Bird Call, Frequency response ≥95db.
You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
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.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I’m afraid that there’s 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): BG1b5830, BGAudio3, BGAudio9
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Do you need price history chart (for all/most countries) for Hunting Speaker Bird Caller FM Radio MP3 Player? There we go. The lowest price was: $31.91.
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)).