CES 2019: 'Indestructible notepad' works underwater
A notepad that can be used in water and a pencil that never goes blunt have been created by a Ukrainian start-up.
The BBC's Cody Godwin tried out the Nuka stationery set in a swimming pool at the CES tech show in Las Vegas.
Read and watch all our CES coverage at bbc.com/ces2019