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: 3.15 in x 2.36 in x 0.39 in (8.0 cm x 6.0 cm x 1.0 cm) Weight: 0.52 oz (15 g)