It is a small stainless steel sphere that is attached to the bottom of the clock and allow you to receive notifications via vibration or leds. But not only alert us messages or calls, but also will allow us to interact with the clock to perform different tasks: hang up a call, delete a message, etc.
This fits the bottom of any clock, and includes hardware that provides an intelligent clock: accelerometer, Bluetooth 4.0 to connect to the phone, haptic vibration and LED light to advertise notifications and battery. This lasts 36 hours and can be charged wirelessly, or by contact. The device is waterproof, so it can be used with the clocks that are submersible, although it is unlikely that we can use to do a lot of depth while diving.
To remain stuck at the bottom of our clock Chronos uses a micro-suction technology, so it does not need any glue or paste mechanism.To make the connection with the phone itself has an app that runs on iOS (iPhone) and Android. Nonetheless, Chronos not come through the first quarter of 2016 and will at a price of 99 US dollars.