2 năm trước mình mua cái nầy $30. Dùng chung battery với GoPro.
Andoer AN4000 WiFi Action Sports Camera 4K 16MP 2 inch Touchscreen 170° Wide Angle Lens with Remote Control and Waterproof Hard Case Support Slow Motion...
https://www.amazon.com/gp/product/B074W7JSK7/?tag=vcf4ever09-20
Nếu được thì lụm mày dùng Sony sensor. Here's one:
$39.99 + 10% off
VanTop Moment 3 4K Action Camera w/Gopro Compatible Carrying Case,Remote Control,16MP Sony Sensor,30M Waterproof Camera w/Gopro Compatible Accessories,2 Batteries,170° Ultra Wide Angle
https://www.amazon.com/VanTop-Compatible-Waterproof-Accessories-Batteries/dp/B082186KCS/?tag=vcf4ever09-20
Lụm thêm vài cục batteries.