Specifications:

Wearing styles Over-the-head

Driver unit size: 40mm  

Battery life: 30h

Bluetooth version: 5.0

Maximum Bluetooth range: 15m (49.20feet)

Battery power: 800mAh

Stand-by time 10.7 weeks

Talk time 30.0 hours (1800 minutes)

Music Playback Time 30.0 hours (1800 minutes)

Battery: Lithium-Ion

Weight: 10.2 oz. (289.2gr)

Dimensions 7.60 x 7.13 x 3.03cm

Features:

Foldable design:

The foldable design is designed for saving your travel bag space, perfect for travel.

Upgraded, soft ear cushions:

More durability and comfort, Enjoy high-quality, Long-listen comfort. Skin texture, lightweight comfortable around-ear fit you can wear all day long. The foldable design is designed for saving your travel bag space, perfect for travel.

Enjoy a quiet journey:

Quells aeroplane cabin noise, city traffic or a busy office, help you focus on what you want to hear.

Improved active noise cancelling (ANC) technology:

E9 can work better and significantly cancel noise for travel, work and anywhere in between. Quells aeroplane cabin noise, city traffic or a busy office, help you focus on what you want to hear. Great for cancelling noise during long trips on a plane or in places with city traffic.

Superior sound quality:

AptX, aptX HD and AAC audio codecs. They will give you a deep, powerful, and immersive sound at any volume, making your overall listening experience just that much better. The goal that provides Customers with better sound quality, is our constant pursuit.

CVC HD calls and Bluetooth 5.0:

The high-quality built-in microphones provide CVC HD calls, the business class communications even in windy or noisy environments, Which is convenient for you to communicate with others. Bluetooth 5.0 promises a quick and stable connection with your Bluetooth-enabled devices.

30 hours of playtime:

A built-in 800mAh battery won't allow your headphones to power off. 30 hours of playtime. Don't need to worry about the power shortage problem on the long travel. 12-month warranty and quick response & friendly customer service. Note: The exclusive authorized seller is COWIN.