Easy to install. 100% brand new. 100% original Walkera brand. Fine workmanship and perfect style. High quality and durability in use. Light weight and portable to carry. Dimensions: 2.36 in x 1.57 in x 1.18 in (6.0 cm x 4.0 cm x 3.0 cm) Weight: 1.94 oz (55 g)