... of built-in rechargeable 2 battery. * Options of Thermal Recorder, IBP, ETCO2 , 2-TEMP, Multi-gas, BIS, Necllor Details: 1. 6 ... built-in rechargeable 2 battery. 11. Options of Thermal Recorder, IBP, ETCO2 , 2-TEMP, Multi-gas, BIS, Necllor other models ...