With its elegant design Otto smart lock guards your dock in style, and the lock has been available for preorder. Curious about its features? Let’s keep checking.The Otto is an advanced and beautifully designed smart lock that measures only 2.6 inches diameter. As we can see from the images, compared with the Bluetooth smart lock, the Otto shows off a more sleek, compact and minimalistic appearance design, and the stainless steel body not only delivers a solid construction, but also sports an eye-catching modern style. With three optional colors the Otto blends well with different interior styles. Moreover, it worksWith its elegant design Otto smart lock guards your dock in style, and the lock has been available for preorder. Curious about its features? Let’s keep checking.The Otto is an advanced and beautifully designed smart lock that measures only 2.6 inches diameter. As we can see from the images, compared with the Bluetooth smart lock, the Otto shows off a more sleek, compact and minimalistic appearance design, and the stainless steel body not only delivers a solid construction, but also sports an eye-catching modern style. With three optional colors the Otto blends well with different interior styles. Moreover, it works