The Renata SR626SW Battery 377 is a set of ten , high-end, scientifically designed lithium ion batteries which work well for a wide variety of appliances. They can be used in toys, hearing and listening aids, gadgets such as watches. The batteries are characterized by very low self-discharge, which means that they will retain their useful life for longer. A high precision battery from Renata, this product helps you install the safe power option for all your gadgets.