Introducing Pulsar's variable voltage, micro 510 threaded battery - The M2. Featuring a drop-in - screw-in function, your cartridge will never fall out or lose a connection due to a loose magnet. With a 12-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 M2 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. Features & Specs - 2.5" size - 450mAh capacity - 510 threaded connection - Pre-heat function (12 seconds) - Variable voltage settings (3.0v, 3.7v, 4.2v) - 11mm chamber diameter - Covered by a 6 month end-user warranty