Welcome to trendystore2018.vn ! Advantage of new version: 1.The probes and pen cap use more durable materials to make them not easy to loosen and fall. 2.Changing the placement position of the batteries, which makes them easier to replace and better protected. 3.It is blister packing,high quality, has better protection during transportation and avoids damage. Voltage: 12 v Operating temperature: 0-60(℃) Color: as shown in the picture Size: 17*3*3 (cm) Products include: 1 * pen