This product will be dispatched by one of our trusted suppliers. You’ll be contacted by their selected courier about your delivery. nest hello lets you know who's there, so you'll never miss a thing. It replaces your existing wired doorbell, and delivers hd video and bright, crisp images, even at night. It's designed to show you everything on your doorstep — people head to toe or parcels on the ground. And with 24/7 streaming, you can check in at any time. Or go back and look at a 3-hour snapshot history to see what happened. product dimensions: h 11.7 x w 4.3 x l 2.6 cm