... ,7.0mAh,rechargeable Lithium batteryData retention36 daysGeneralCharacteristics Computing16-bit CMOS CPU,2MB flash memory;2MB SRAM(additional ... 56HMzOptionalSupported standard listMifare ISO 14443B,ISO 15693,ICODEEnvironmental Operatingtemperature-10ºC to 70ºC/ 14 ºF to 140 ... , Keyboard wedge cradle, USB cable),Modem cradle(56K), Ethernet cradle(10/100 Baset),4-slot battery charger Warranty1 year ...