WLR/C E99 K3 Pro 4K Single / Dual Camera FPV 6-Axis RC Drone Altitude Hold 2.4GHz 4CH Foldable Quadcopter Boys Toys Feature: 1. The arm is folded, small and easy to carry. 2. With function, you can connect the application, APK system to take photos, videos, real-time transfer images through the phone. 3. There is a one-key return function, which makes it easy to find the way home. 4. One-key take-off/one-key landing/ascent/descent/turn left/turn right/360° roll/headless mode/fast gear-slow gear/photo/video/switch dual camera/face recognition automatic photo/gravity sensor/ trajectory flight. 5. Height-fixing function, foldable aircraft, six-axis gyroscope; forward and backward, left and right flight (with camera can add functions: gesture photo, video, headless mode, emergency stop, trajectory flight, gravity sensing , take pictures automatically). Specification: Model: E99 & K3 Color: Black/Grey/Orange (optional) Frequency: 2.4GHz Gyroscope: 6 axis Channel: 4CH Charging method: Universal USB interface Battery capacity: 3.7V 1800mAh modular battery Flight time: about 13-15 minutes Charging time: 60 minutes Remote control distance: about 150 meters Photo mode: FPV Video resolution: 4K single/4K dual Remote control battery: AA battery X 3 (not included)