DJI Phantom 4 Accessory Bundle: Included DJI Intelligent Flight Battery for Phantom 4, DJI Phantom 4 - 9450S Quick Release Propellers & Luckybird USB Reader The Phantom 4 - Intelligent Flight Battery is a 5350mAh, 15.2V LiPo battery that is specifically designed for the Phantom 4, enabling optimal performance The battery also has built-in sensors and bright LEDs that let you know the status and remaining power of your battery in real time. Two pairs of propellers:Compatible with Phantom 4 Only, 2 clockwise and 2 counter-clockwise propeller. Each propeller weights 11g, diameter and screw pitch is 2412.7cm. Package included 1pc Phantom 4 - Intelligent Flight Battery, 2 Pairs propellers,1 pc Luckybird USB Reader