Great & convenient pen. No worries about charging a battery. Just use until oil is gone. then dispose the pen. Est puffs is about 350. Jack Herer is easily one of the best-known strains in America. Originating in California, this sativa honors the memory of Jack Herer the man, a longtime local cannabis activist and medical marijuana user. It's not quite as strong as its popularity might suggest, but the high is heady and distinctive. Jack Herer has a unique loamy smell and taste with hints of pine and trees. The sativa high is happy, bubbly, and euphoric, spurring energy and creativity. Jack Herer is ideal for errands and other daytime activities. This strain is effective for patients with mental or neurological disorders, including bipolar disorder, anxiety, migraines, PTSD, and ADHD.