Material

•  metal (1)
•  plastic (1)
•  textile (1)

Capacity

•  up to 500 mAh (1)
•  up to 4000 mAh (1)

Interface

•  Bluetooth 3.x (1)
•  USB (1)

Interface (supplement)

•  AUX connector (1)
•  Micro-B connector (1)
•  Type-A connector (1)