The battery is ideally suited to Sonel devices, especially MRU-200, MZC-306, MPI-525, MPI-530, MRU-200-GPS and MPI-530-IT meters. It supplies a voltage of 4.8V and has a capacity of 4.2Ah. Manufacturing technology: nickel metal hydride (NiMH). The battery is black. The price is for one piece of battery.