The V4.2 Bluetooth headsets from Besstec can be divided into two primary types: quick charge and noise canceling. The quick charge headset lasts for 3 hours after charging for only 10 minutes. The noise canceling headphones use active noise cancellation to cut off ambient background noise. All of our Bluetooth products have in common, great clarity and outstanding range! We know once you give our headsets a listen you will be hooked!