350 is single price 1 pack have 5 pis it costs
This is a pack of Toply CR2016 3V lithium button cell batteries.
They provide a stable 3V voltage.
The batteries are non-rechargeable (primary) lithium cells.
They are commonly used in small electronic devices like watches, calculators, remote controls, and key fobs.
The packaging indicates a "SUPER" type lithium battery.