RC Quadcopter Stealth Bomber "B2 X-Series" - 3-Axis, 2.4GHz Frequency, 100 Meter Range The 'B2 X-Series' is an RC Quad Copter which has a range of 100 meters and can be controlled using the included professional remote. 6941377688672 RC Toys & Quadcopters Electronics Gadgets RC Quadcopter Stealth Bomber - B2 X-Series