The Worx Jawsaw is rated to cut branches up to about 4 inches in diameter; its bar is designed to accommodate branches up to 4" thick.
The Jawsaw has an automatic chain-tensioning system to keep proper tension and an automatic chain oiler with an oil-level indicator to maintain lubrication and extend chain life.
The Jawsaw uses a 6-inch blade/bar. The bar and chain sit inside a protective housing that retracts the blade into the neck when not in use, minimizing exposed chain during operation.
Yes — the Jawsaw is compatible with a 5-foot pole attachment (sold separately) to extend reach. Its relatively light weight is also noted in product descriptions as making it easier to hold up high for trimming.
Key safety features include: a fully protective housing with a retractable bar and chain, a housing that can act as a cutting prop for ground-level work, an automatic chain-tensioning system, and an automatic chain oiler with an oil-level indicator.
It varies by listing. Some Jawsaw kits include a 20V 2.0Ah battery and a 0.4A charger, while other listings are sold as “TOOL ONLY” and do not include a battery or charger.