The Microchip M4S ID reader is a reliable pet microchip reader and animal microchip scanner built for accurate, fast livestock identification and pet ID checks. It reads all FDX-B microchips compliant with ISO 11784/11785, as well as FDX-A and HDX chips for broad compatibility. A 3.7V 1400mA rechargeable lithium-ion battery delivers several thousand reading operations per charge, and the included USB cable makes recharging simple. Auto shut-off helps conserve power for veterinary clinics, shelters, and farm use.