Insta360 launches a single-lens Osmo Pocket rival you can actually buy in the US

Insta360's first compact steadycam, the Luna Ultra, made a splash this year by beating DJI to launch with two lenses. Now it's followed the Ultra with a slightly stripped back Pro model, which drops to one lens but has a unique advantage: It can shoot vertical video in 4K. Plus, unlike DJI's Osmo Po