Sold as 2 UNITS at $21.45 per unit. (1 unit = each.) Easy to use. Provides a quick kill. No setting or glue. Highly effective 100% kill rate. Uses 4 ‘AA’ batteries. Will kill approximately 50 mice. Mouse expires in 10 seconds. Manufacturer number: M252. SKU #: 7132756. Country of origin: China. Distributed by Woodstream Corp.