Nut find3 smart tracker, Key finder phone finder item finder, bi-directional alarming, one touch find, real time location and update on Nut app, Green Tea 1 year on standby and replaceable battery Find-it model and anti-loss double working model Anti-loss when device disconnected with your phone, alarm both device and phone Silent zone and silent time option for better protect Save last known locations and have community search networks help to find