Selfie Stick
Best Capacity & Steady provided by 3rd generation chipset.

Principle: using the headphone cable to touch off the photo button.
Be Attention: Before buying this product, please confirm the volume key of your phone can take pictures or set "volume key" to take picture.
Apply to IOS 5.0 above system, android 4.2 above system.
For IOS system, you don't need to set up.
For Android system, you may set open your phone camera - setting - volume key - set the volume key to take pictures.
Some android phone cant be set, you can download free APP like "camera 360" to take pictures.