With the Osmo Action 3, DJI has brought back the action-cam form factor and made numerous small improvements from the mount to the displays to the battery.
Smatree Charger Stick for DJI Pocket 3, DJI Osmo Action 2 Camera, External 5000mah Power Stick Compatible for Gopro Hero 12/11/10/9/8 Action Cameras, DJI Osmo Action 4/3/2 : Electronics
DJI Osmo Action 3: Far more battery life, fast charging and a spiffy new mount
21 THINGS TO KNOW - DJI OSMO ACTION 3
For DJI Osmo Pocket 3 Camera Accessories Expansion Adapter Mount Holder w/ Screw
DJI's Osmo Action 3 has 'Extreme' Battery Life and 4K 120 FPS Capture
Smatree Charger Stick for DJI Pocket 3, DJI Osmo Action 2 Camera, External 5000mah Power Stick Compatible for Gopro Hero 12/11/10/9/8 Action Cameras, DJI Osmo Action 4/3/2 : Electronics
4K 120p News, Reviews and Information
DJI Osmo Action 3's Best Feature Is a Better Battery - CNET
Best New Gear and Coolest Gadgets This Week, According to Men's Journal - Men's Journal
DJI Osmo Action 3's Best Feature Is a Better Battery - CNET
DJI OSMO Action 3 - How To See Battery In Percentage
DJI's Osmo Action 3 has 'Extreme' Battery Life and 4K 120 FPS Capture