Custom TaoTronics Sound Liberty 53 (TT-BH053) is another PREMIUM GIFT CHOICE .As the "Amazon's Choice", these earbuds have a crystal clear sound and superb long playtime. Custom TaoTronics Earbuds add personalized design to the product with the following added value for your brand promotion. Superior Audio Quality: 6mm dynamic speakers and noise isolation deliver clear and flawless in-ear call sound. Industry-leading 40 Hours. Playtime: Up to 5 hours' playtime on one charge and a charging case holds multiple additional charges for up to 36 hours' playtime. Smart Touch Control: Answer and hang up calls or access other functions by tapping on the earbuds instead of picking up your phone when it's a few feet away. Mini Size & Portable Charging Case.