Wazzup ! Here's all that you need to know pertaining the HUD - Fuel Book powered accessory With the HUD, you can save battery on your smart phone and keep your eyes on the road all the time. -During our testing we found certain cars have the diagnostics port enclosed behind a cover and it was even harder to get the GPS Lock hence we've placed the GPS on the -HUD rather than the Fuel Book device since the GPS Lock time is 15 x Faster -The HUD will also save your phone's battery by not using the phone's inbuilt GPS and using the ping location provided by the HUD -You can custom design the HUDs appearance with the Fuel Book App and place the Apps whose notifications you wish to see -The HUDs Smart Assistant will respond to when asked with the hot word "Fuel Book", e.g; "Fuel Book" "Where Am I" (or) "Nearest hotels in the area" -The colorful ePaper display projection with ambient sensor allows the HUD to be the brightest at any given time of the day -Boosted with a 2000 mAh battery the HUD is capable of providing 5 continuous days of vigorous usage and up to 10+ days on casual usage and with the solar cells in place you ca have a tangle free experience on drive. -The Smart Sensor automatically turns the HUD on only when the Car is started -You needn't be connected to the Fuel Book device for displaying device data such as Speed, Fuel Status and Diagnostics