Features: Pure copper motor, strong power, fast cutting, improve efficiency. Fine quality switch, fast and slow adjustment, step less speed change. Fine quality guide plate chain, deep quenching, more wear-resistant, smooth cutting. No damage to the bark, long time holding and not tired hands. The new chain will be stretched during the initial period of use. Please check it frequently and adjust to the proper tension, because the loose chain is easy to derail, which may cause rapid wear of the chain and guide plate Before charging, please check whether the surface of the battery is clean and dry Before delivery, the battery of this product is not fully charged. Therefore, it must be fully charged before first use Do not charge the battery for a long time, avoid using up all the power in the battery, otherwise it will damage the battery In order to save the use of battery power and ensure the longest service life, please do not overload the equipment.