The Grizzly Guru is the first portable vaporizer to do it it all, and we mean ALL – dry herb, concentrates, and e-juice – and not only does it do it all, but it does it all right. The Grizzly Guru has an impressive premium Li-Ion batteries which will give you up to 3 hours of use on a full charge. A sturdy, compact and subtle design makes the Grizzly Guru the most durable vaporizer out there and is ideal for those who enjoy vaping on the go. All of this provided while still being able to fit in your pocket. What more do you need?