While running/walking you can get a valuable reward - chests. The chance to receive it depends on the Luck attribute, however mainly, it's a question of probability.
There are 13 levels of chests. They contain KCAL tokens and/or Level 2 Gems, boosters for the Clash Battles.
The bigger the level of a chest - the bigger the chance to get a gem.
You can have a maximum of 4 unopened chests. Only unopened chests count, there are no other limitations.
To open a chest simply:
Open the main screen,
Find a chest above your Sneaker and Headset tabs,
Click on a chest,
Check the timer when the chest can be opened or click on the 'Speed Up' button at the bottom of the screen to open the chest sooner,
When the timer is up, you will be able to open the chest by clicking the 'Open' button at the bottom of the screen.
It takes a different amount of time and KCAL tokens to open a chest: it depends on the chest level. The price also depends on KCAL's current market price. That way we can ensure a stable price in fiat equivalent and provide additional support for the game economy.