This CR2032 Lithium Coin Cell Battery is 3 V and has a capacity of 200 mAh.
This battery is a replacement for Eveready ECR2032; Duracell DL2032; Varta CR2032; RayoVac CR2032; Maxell/Toshiba CR2032; AUDI Keyless Entry
These are replacement watch batteries and replacement small electronics batteries.
The CR123A Lithium 3 Volt battery offers up to 4 times the power of alkaline batteries. The 3 Volt Lithium CR 123A Battery is a high-rate 3 V lithium battery. It is used to power photo equipment, Streamlight and SureFire tactical lights and firearm lights.