Product specification: 24V 1 Battery 36V 1 Battery Powerful & Highly Efficient Cutting : This mini chainsaw is equipped with a strong pure copper motor, large capacity battery and solid chain which can provide powerful and smooth cutting. It only takes about 10 seconds to cut a log with a diameter of about 4~6 inch. (the specific value varies with the actual hardness of the wood) Portable & One-hand Operation: This 4 inch mini electric chainsaw is lightweight and portable to carry. (only 1.8 lbs, excluded battery). The cordless chain saw is designed with a anti-slip handle which is very comfortable to hold. It can be used with one hand and will not easy to be tired for long-term working, even the women can easily control it. Safety Ensure & Easy to Use: We are highly concerned about the security of the product. Our Mini Cordless Chainsaw is equipped with a safety lock switch and anti-splash cover. It requires the user to press the lock button and power switch simultaneously to start the battery chainsaw and the anti-splash cover can prevent the wood chips from splashing during work. The mini wood saw has been installed, you just need to adjust the tightness of chain after working. Large Capacity Battery Pack: Normally, the battery can be used for 40-60 minutes after full charging. (the specific time varies with the actual hardness of the wood) In addition, the rechargeable battery has much longer life with self-overload and temperature protection.