The earbuds 5.1 version, one set include: a pair of Headphones, Charging case (magnet inside), USB cable, English Instruction, two sets Rubber earplug (1 set on device, 1 set spare). Compatible IOS & Android. Headphone 45mAh, charging box 300 mAh, approx 1hour can fully charge, play around 6hours. Once take out quick auto connection with memory function, Premium voice quality with 9D mega bass. High sensitivity when touch & operate. Ergonomic design suit different cochleas, steady & good feeling, long time no pain or inadaptation.