I found this product a hassle to use, a hassle to update the software, a hassle to use its services.
The Bury website, from Germany out, offered to update the software. The only problem was you had to have a PC. The word Mac didn't exist in the manufacturer's lexicon. Eventually I had to borrow a friend's PC to help.
The display was more or less useless in bright daylight. The voice recognition for voice commands only worked 1 in 10 attempts throwing the product frequently into confusion. I must have had a problem with my normal voice and articulation.
After the update the kit kept on dropping the bluetooth connection. My iPhone would try to connect - connected signal OK - connection OK for about 1 minute, and then connection lost until iphone activated to connect again and again ad nauseum.