Top Features Front OLED Touchscreen . Increases battery life upto 160minutes . Allows external microphones . 4-mic Matrix Stereo The module includes an OLED front screen a microSD card slot and three microphones making it perfect for vlogging and taking selfies. With the magnetic lock it can be attached to the Camera Unit. When connected DJI Action 2\'s battery life increases to a maximum of 160 minutes offers dual OLED touchscreens and a 4-mic Matrix Stereo supports Audio Zoom and Directional Audio and can be used with an external microphoneWhen connected DJI Action 2 offers dual OLED touchscreens so you can flexibly switch between screens and effortlessly take perfect selfies. Battery life is increased to a maximum of 160 minutes and the 4-mic Matrix Stereo Audio Zoom and Directional Audio are supportedThe Front Touchscreen Module is not waterproof or dustproof and should be used with the Waterproof Case for underwater activities. Specification Dimensions 39×41.6×24.6 mm . Weight 64 g . Touchscreen 1.76 inches 350 ppi 500±50 cd/m² 446×424 . Built-In Battery . Battery Type LiPo 2S . Capacity 1300 mAh . Energy 5 Wh . Voltage 7.7 V . Charging Temperature 0° to 40° C (32° to 104° F) . Charging Temperature 5° to 60° C (41° to 140° F) . Operating Time* Camera Unit + Front Touchscreen Module 160 minutes . Charging Time** Camera Unit + Front Touchscreen Module 90 minutes . *Tested in a laboratory environment while recording 1080p/30fps (Power Reserve) video with electronic image stabilization disabled and should be used for reference only**Tested in a laboratory environment when using a 5V/2A USB adapter and should be used for reference only.