Features: Swithcable Dual Camera: Front camera and bottom camera can be switched by remote controller Optical Flow Dual Positioning: Equipped with optical flow Locator in the horizontal direction and fixed air pressure in height direction to achieve accuracy,Hover to make the picture clearer. Modular battery: The battery adopts modular design, which is easy to install and replace. Gesture interaction: Free up your hands for a big picture and get together to take a group photo. Smart Phone Control: More ways to play in the APP. HD Video Transmission Specifications: Camera: 1080p Optical Flow/4K Wifi/4K Optical Flow Product Color: Black Product Packaging: Box/Bag(Optional) roduct Materials: ABS Adjustable Angle Camera: Adjustable camera by transmitter, 90 Phone Size (Max): 5. 5inch Remote Control Battery: 2XAAA Battery Frequency: 2. 4GHz Product's Weight: 113. 2g Battery: 3.7V 1200mAh Control Distance: About 150M Flight Time: About 15 mins Charging Time: About 3 hours USB Charging (3.7V): Product Size : 28x22x5.5cm(Expanding ) 12x7.5x5.5cm(Folding) Product Package Weight : 497.4g(Box Package ) 486.6g(Bag Package) Image Transmission Distance: 80M Image Follow: 1-3 Meter Tap Flight: Camera Lens: 120 Hand Gesture Shooting/Video Reconization: 1-3 Meter Photo/video Share: Photo Resolution : 1920x1080p 4096x3072P 4096x3072P Video Resolution : 1920x1080p 2048*1080P 2048*1080P Photo Resolution/Video Resolution(Bottom Camera): 1280*720P 2048*1080P Frame rate: 20 fps Taking-off Weight: less than 250g