The 2450mAh Gold High-capacity Rechargeable Lithium Battery is an aftermarket battery that will fit the TOP SECRET SPY CAMERA units.This battery works in both MVS01 and MVS02 units.  This Battery will allow you to record almost 3 times as long as the original battery that comes from the factory.  

This 2450mAh Gold High-capacity Rechargeable Lithium Battery for Nokia 3650 / 1100 uses high quality materials.   It has an  integrated microchip so the battery boasts a  high capacity and dependable performance.  The integrated microchip can prevent battery from overcharging, as well as prolong battery's life.