The Pulsar ReMEDI M3 variable voltage battery 450mAh features a drop in - screw in function. Your cartridge will never fall out or lose a connection due to a loose magnet. With an improved 8 second pre-heat, 450mAh battery and sitting at a mere 2.5" tall, this unit will quickly become your new go-to when hitting the town, trail or during those awkward family gatherings. The M3 comes with everything you need except for a cartridge. Use with your own cartridges with a diameter up to 10mm. Perfect for thick oils and CBD.