100% Brand new and high quality! Direct antenna 5.8G 600MW ultra-light weight、 ultra-small size、 the keys 40 FM frequency、 ad hoc 8 through machine-specific frequency matches Reverse power protection、 stable performance、 reduce fever、 Foot 600MW power ultra-long transmission distance Air emission unobstructed distance of about 4-5km. Dimensions: 4.72 in x 2.76 in x 0.59 in (12.0 cm x 7.0 cm x 1.5 cm) Weight: 0.88 oz (25 g)