Features: brand new and high quality brand new and high quality It enables you to use new GNSS engines (GPS, GLONASS) to measure and analyze many aspects of remote control car and aircraft performance, thereby providing you with acceleration, gravity, speed, for time, distance, height and vertical speed. With its compact size and built-in antenna, it is an for ideal choice for installation on RC vehicles and airplanes. The 5-hour normal running for time of the built-in rechargeable lithium battery can provide enough competition for time for RC drivers or pilots. It is very convenient to use the micro USB charging port and connect it to a USB port or another compatible USB power source for charging. Through three modes tailored for RC enthusiasts: drag, track and fly, you can easily and intuitively analyze RC operation or flight. Specifications: Material:ABS Size:Approx.4x3.9x1.6cm/1.57x1.54x0.63inches Color:Black Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x GNSS Performance Analyzer 1x Charging Line