Model 970607602. LE-322 40V Lawn Xpert 21 in. Push Lawn Mower - 970607602. Husqvarna LE-322 40V Lawn Xpert Brushless Lithium-Ion 21 in. Cordless Push Lawn Mower Kit (7.7 Ah). Walking speed adjusts up to 4 miles per hour so you can mow at your own pace using this battery lawn mower.