Specifications:
Color: Black (battery operated).
Product Name: Electric GT Knot Notter Speed: 125 rpm Battery: 2 x AAA batteries; Weight: 2.9 oz (83 g); Volume: 4.5 x 2.5 x 1.1 inches (115 x 63 x 28 mm).
Color: Blue (rechargeable)
Product Name: Electric GT Knot Notter Speed: 125 rpm Battery: 300 mAh Lithium Battery Charging Interface: Micro-USB Weight: 3.2 oz (93 g), Volume: 4.5 x 2.5 x 1.1 inches (115 x 63 x 28 mm).