CR 2450 Battery for the Moni Moto Fob Requires 1 Technical specifications: Type: 6450 / CR 2450 Int. Frame size: CR2450 Capacity: 560 mAH Voltage: 3V   System: Primary lithium button cell (Li / MnO2) Diameter: 24.5 mm Height :: 5 mm Weight: 6.2 g