BA-399/U Battery for PRT-4 Military Transmitter (Set of 2) | BA-399 | BMI Karts And Parts
Sony SR927W - 399 Button - Watch Battery (5 Pack)
Amazon.com: Duracell 395/399 Silver Oxide Button Battery, 1 Count Pack, 395/ 399 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More : Health & Household