Specification: Model: 4 inch electric chainsaw with 1 batteries and 2 chains Rated power: 600 W. Rated voltage: 220 V. Idle stroke: 2200 SPM. Body weight: 0.8 kg. Body weight + battery: 1.1 kg. Power Supply Type: Lithium Battery Technology Battery: 21 V 1.5 Ah. Saw blade size/diameter: 110 mm. Wood cutting depth: 80 mm. Maximum cutting thickness: 80 mm. Scope of application: pruning, logging Charging time: 1.5 hours . Usage time: 25 minutes. Functions: 4 inch cordless electric one-handed chainsaw Fast cutting speed, low noise 21V 1500 mAh lithium battery with large capacity and long battery life. Stainless steel hardened saw blade, no jamming of teeth after a saw Double sided hacksaw blade, high hardness and wear resistance, longer service life High performance motor with copper core, easy tree cutting and tree cutting. Small and lightweight, strong performance, one handed operation. Safe start switch to prevent accidental machine starting High speed heat dissipation system to prevent