The difference between F9 and F30 is the M30's lithium battery can be replaced, not built-in. The difference between the MC42 and the F9 and F30 is that the MC42 can have a flashlight for easy night riding.                          Note:           Please note: This camera is a direct recording without WiFi must be inserted TF card to use.            1.This camera does not have built-in memory. If you want to better save the camera content or record information. Please use the original memory card of 04G-128G. In order to ensure the normal use of the mini camera, please do not use fake cards, it is recommended to buy with our memory card, thank you.                                          2.Please charging 2-3 hours before using, due to the long time shipment.                                          3.If the micro TF Card is brand new,please format it before using.                                          4.Please choose different packages according to your memory card needs, I recommend"Option7"It is better suited to our us.                                 Product Description:            Lens: 5 million pixels, 120 degree A+ level high resolution ultra wide angle lens  Video format: AVI  Camera mode: 1080P (30FPS) mode, resolution 2592*1944  Photo format: JPG  Photographing time: 6 hours  Video resolution: 1280x720P (60) FPS or Full HD 1920*1080P (30FPS) Switchable external storage: TF card (maximum support 32GB)  USB interface: 2.0  Power interface: 5V  Built-in battery capacity: 650 mAh  Waterproof: Aluminum alloy water-proof design, more suitable for outdoor extreme adventure (But unable to support deep water waterproof)  Microphone: built-in  Motor: Built-in vibration motor, vibration prompts working status  Low illumination: Built-in 1/4-inch light sensor to capture ultra-clear pictures in dark places  Cyclic coverage support scope of application: driving recorder, mountain biking, water limit, flight limit, ice and snow limit, rock climbing, travel and other outdoor sports    Feature:  Automatic loop recording.  Built-in 650 mAh battery, can record for 2 hours.  The ultra-mini is lightweight, easy to carry, and can be used as a mini sports DV.  Waterproof aluminum alloy shell, suitable for various outdoor extreme adventures.(But unable to support deep water waterproof)            Built-in 1/4-inch low-noise high-quality photosensitive element can capture ultra-clear images in darker conditions. The built-in motor can remind the working state through vibration.  Support high-capacity Micro-SD/TF card up to 32GB, excluding TF card. Equipped with multiple mounts, you can mount it on a bicycle, car, helmet, arm... or any other flat surface  One. How to take pictures:  In 1080P (30fps) mode, switch the wave switch to the camera mode, press the camera/video button, the sports DV will light up red, and the photo will be completed after the red light goes out, you can connect to a PC or use a card reader to read Archive of photos taken.  Note: The camera function is only available in 1080P (30fps) mode.  two.