Energizer 2pcs AAAA E96 1.5V Alkaline Battery Zero Mercury For Laser Pointer , Headphone, Health Appliance Etc Features:- Dependable Power For Bluetooth® Headsets, Glucose And Blood Pressure Monitors Cell Size: AAAA/E96 Type: Miniature Alkaline Volt: 1.5V 100% Original Energizer AAAA E96 1.5V Alkaline Battery (2pcs) Special Features:- Features A Zero Mercury Enviroment Friendly Energizer Battery Size AAAA E96 1.5V Alkaline Battery Long Lasting Energy When You Need It This Battery Size Is Most Often Used In Small Devices Such As Laser Pointers, Led Penlights, Powered Computer Styluses, Glucose Meters, And Small Headphone Amplifiers