Sony Earbuds Active Sports In-Ear Headphones The right gear and the right headphones. SONY Active Sports Headphones deliver secure comfort with water resistant1, high-quality sound to get you going! Lightweight clip-on headphones for active lifestyles Loop hanger for secure fitting Water-resistant design prevents sweat from leaking in1 13.5 mm high sensitivity drivers for premium sound Angled earbud structure for stable fitting Product Dimensions: 1.1 x 6.8 x 2.8 inches Item Weight: 1.6 ounces Manufacturer: Sony Item model number: MDR-AS200/PNK Batteries: 2 Lithium ion batteries required. (included) Thanks for looking!! Disclaimer No returns unless defective or damaged!  If you receive your item defective or damaged, take a picture and send to me within 72 hours and we will work something out.  Please ask for additional pictures or any question before you purchase.