1. Wireless WiFi connection, easy to connect and use. 2. mini size, light weight, portable use. 3. Compatible with iOS / Android / / systems. 4. WiFi device built-in 550mAh battery , through the 5V power supply to work. Frequency: 2.425GHz- 2.493GHz Transmission distance: 5-30M Capacity: 800mAh Power: 5V Applicable device:endoscope camera,Digital camera,etc Support system: IOS/Android Function: take pictures, Recording videos (Due to different light angles and color differences between different displays, there may be slight differences between the actual object and the picture, which does not affect use.) Colour:Black Material:plastic Package Contents: 1x wifi box 1x charging cable 1x Englsih user manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.