Super easy to program and make changes to frequencies, tones, scanning or functions. Easy to swap frequencies between different channel numbers using cut and paste. Battery pack holds a charge great but for a few dollars the AA battery pack filled with 2850MAH batteries goes for ever and the standard battery pack works as a backup. Super easy to use, great strong receive audio and great reports on transmitted audio. Worked AO51 on my first try. I simply can not find a flaw. I ordered mine from a Hong Kong dealer, $105 shipped to my door in 8 days from the time I ordered after a friend (K8EMR) told me I had to get one. I was a huge skeptic but not anymore. Much better than the Icom I had in every respect.