Pros:1. Smallest size of Blue tooth headsets ever.2. Feather-light.3. Slew of accessories.4. Many charging options..AAA Battery,A/C Power & laptop USB.5. Headset with Vibrator (makes up for my non-vibrating nokia 9300)6. Convenient pen-like clip(holds the headset) which clings to the shirt pocket.7. Doesn't hurt the ear.8. Excellent and loud sound clarty courtesy DSP(Digital Signal Processing).9. Ear loop for securing the headset to the ear.Con(s):The ear bud though available in 3 sizes and though very soft, bearly holds on. Feels like it may fall off any moment. The ear loop gives some assurance but it easily comes off. The ear loop is locked in place due to the ear bud. Slight wriggle and the ear-loop, ear bud and hence the Headset are down there !!!!! :( Design Flaw..