Multitip Design:? Unique to Defunc the Multitip design was formed first and foremost for a secure fit. However with a secure fit comes a better delivery of sound to the ear. So unlike an earbud design the Defunc can deliver more punch. ? True Plus has the flexibility of adjusting the head by up to 30 degrees to suit your wearing style. ? 3 additional sports tips are included for a secure fit during the most demanding activities. ? The charging case allows for the sports tips to remain on when charging.|Playtime:4-5 hours on a single charge. When combining the charge case there is a total of 35 hours.|Microphone:Dual high-quality microphones are used to ensure calls are clear.|Water Resistance:IPX4 rating. So being caught in the rain while running is not a problem.|