Back in 2015, Logitech took one look at Dropcam / Nest's home security cameras and thought it could do better. It released Circle, a cute ball that could monitor your dwelling and even stream video for three hours untethered from the socket. Two years later, and the company is launching the Circle 2, which looks a lot more like Nest's outdoor camera, and similarly works outside. Kinda. If you don't live in a perma-dry state, you'll need to plump for a weatherproof accessory to protect the cabling from the elements.