Material

•  metal (8)
•  plastic (43)
•  textile (1)

Capacity

•  up to 3500 mAh (2)
•  up to 4000 mAh (2)
•  up to 10000 mAh (2)
•  up to 20000 mAh (2)

Speaker

•  up to 3 W (1)

Interface

•  Bluetooth 3.x (1)
•  Power Delivery (4)
•  Quick Charge 3.0 (4)
•  USB (5)

Interface (supplement)

•  AUX connector (1)
•  Micro-B connector (8)
•  Type-A connector (8)
•  Type-C connector (4)

Weight

• 0.12 kg - 0.42 kg

Brand

•  ER (7)