•With BT3.0 technology, this remote shutter has fast transferring speed and a transmission distance of 33ft •It is compatible with smart phones which OS is Andriod4.2.2 or newer, iOS 6.0 or newer •When it is connected to your smart phones successfully, you are free to take a picture or video by clicking the button, without holding your phone •With a LED light, the flickering frequency of it clearly shows the state of the connection •Only weight 8 grams. Portable and lightweight design is enough for you to carry it around Specifications: •BT Version: BT3.0 •Transmit Frequency: 2.4GHz-2.4835GHz •Transmission Distance: 10m/33ft •Battery: CR2032*1 Cell •Battery Life: About 6 months under working in 10 times a day •Item Size: Approx. 5.0*3.1*1.0cm/1.96*1.22*0.39in Compatible with: •Android 4.2.2 & iOS 6.0 phones and newer Package included: •1 x Remote Shutter •1 x Button Cell •1 x User Manual