First, it is an overpriced nearly worthless accessory. Yes, if you want a 1999 candy bar phone, great. It also will use the laser when powered off & my dog likes to chase the red dot. However, it DOES NOT allow you to reply to text messages, not really. It lets you select pre-written messages to send, but you cannot compose on the fly. HTC also killed the 12 hr clock, in favor of 24 hr only. Whatever, not a big deal. It could be kind of useful, but the range on it really is atrocious. The degradation is nearly unbearable at 10 feet. So, why do I have this? One reason alone. It works perfectly to control Google Play Music which I use constantly in the car, of which I drive 50,000 to 60,000 miles annually.
Also, the ringtone on it is pitifully low, as is the vibration. But it makes a great remote in the car, albeit a bit expensive, controlling tracks, volume & play/pause.