Powerful brushless motor and counter balanced shaker mechanism provide smooth operation and trouble-free use. Compact, durable construction for incubator use (+4 to 65°C) Speed and time are set with an analog knob. Set and current values of speed and time are displayed digitally. Speed: 20-300 rpm. Timer: 0 to 99 minutes or continuous. Single and double flat platforms hold trays, plates and dishes. Double platform allows expansion of the shaker capacity without increasing the footprint. Universal platform has spring loaded bars that adjust to fit flasks, bottles, tube racks and odd shaped containers. Maximum capacity: 4 x 1 L, 5 x 500 ml, 9 x 250 ml or 16 x 125 ml. Motion/orbit: horizontally circular/ 19 mm. Maximum load: 4 kg. Dimensions: 10.1”W x 12.5”D x 5”H. Power: 120V