Video in, Net Weight, Video Input Impedance, 36mm*36mm @30.5 × 30.5 M3 holes, Output Power, DC 9V @Max 450mA, DC 5V @Max 250mA, Frequency Channel, 25mW / 200mW / 600mW, DC 7-26V, Resolution, Encoder, Dimension, 7.5 g (without antenna), MJPEG@AVI, Micro SD Card, 5.8G 48CH, Power in, Working Current, VGA (640x 480) @ 30fps (NTSC) / 25 fps (PAL), 75 Ohm, Antenna Connector MMCX, Built-in MIC, Audio, Max 32G, Power out, CVBS@1Vp-p 75Ω.
Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
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 and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($16.19): BGBCBG10
2. ($16.55): Parts8
paste coupon code in your cart and click Apply 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): f62884, BGBCFPV
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for SpeedyBee RC VTX-DVR. The lowest price was: $10.9.
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)).