Duracell Specialty Alkaline AAAA Battery 1,5V, Pack of 2 (LR8D425) Suitable for use in Digital pens, Medical Devices and headlamps : Amazon.in: Electronics
Best Buy essentials™ AAAA Batteries (4-Pack) BE-BAAAA4PK - Best Buy
Kastar AAAA 1.2V 400mAh Battery 1 Pcs and USB Charger Replacement for Surface Pen Battery, Asus Stylus, Sonic Tooth Scaler, Video Game Controllers, Bluetooth Headset, Glucose and Blood Monitor Battery - Walmart.com
Energizer Alkaline Aaaa Digital Camera Batteries (2-Pack) in the Device Replacement Batteries department at Lowes.com