It's a 3v Lithium coin cell battery. It has nominal voltage 3v and rated capacity 560mAh. This battery can operate on temperature range -30°C to 60 °C. This battery generally used for memory back-up, digital watches, car keys, laser pen, fitness appliances and medical devices such as tensiometer and clinical thermometer.
You can use these batteries in calculators, digital watches, memory back-up, laser pens, car keys, fitness appliances and medical devices like a clinical thermometer and a tensiometer. Lithium Coin CR2016 has a proven track record for appliances where conventional batteries cannot be use