Duracell DA13, Energizer AC13, Energizer AC13E. Panasonic 13PA, Panasonic PR13PA,, RadioShack RS13. Model: ZA13 A13. Application: Watch,Hearing Aid. Chemical System: Zinc Air (Zn/O2). Build Standard: IEC 60086-2:2000,IEC 60086-2:2011.
eBay