Sennheiser HD4.40BT Headphones: Wireless I Over the Ear Headphones

Lightly used Sennheiser HD 4.40BT Wireless Bluetooth Over-Ear Headphones in Black are designed for studio monitoring, DJ, and live monitoring. These headphones feature a comfortable headband form factor and a wireless Bluetooth connection for added convenience. With Sennheiser's brand reputation and high-quality design, these headphones provide superior sound performance and are suitable for various professional audio applications. The sleek black color adds a stylish touch to these versatile headphones.
They offer a, balanced, bass-heavy sound profile suitable for commuting, with on-earcup controls, dual microphones for calls, and NFC for fast pairing. 
Fold (see pics) for ease of storage.
USB charging cable included.

Key Features and Specifications: 

• Audio Performance: 32mm32 m m32𝑚𝑚 drivers deliver a clear, punchy, and "fun" sound signature, with a frequency response of 18−22,000 Hz18 minus 22 comma 000 Hz18−22,000 Hz.
• Wireless Connectivity: Bluetooth 4.0 with aptX technology enables wireless, low-latency, high-fidelity audio streaming.
• Battery Life: Offers approximately 25 hours of playtime, with a full recharge taking about 2 hours.
• Design & Comfort: A lightweight, around-ear, closed-back design with soft, replaceable earpads for passive noise reduction.
• Controls & Microphone: Convenient buttons on the earcup control volume, music playback, and calls. Dual omnidirectional microphones reduce noise for clearer calls.
• Portability: A durable, foldable headband allows for easy storage in the included soft pouch.
• NFC: Supports Near Field Communication (NFC) for one-touch pairing with compatible devices.
• Wired Option: Includes a detachable cable with an angled 3.5mm3.5 mm3.5mm plug for wired listening, allowing use even if the battery runs out. 

Pros and Cons: 

• Pros: Good, punchy bass, long battery life, lightweight, excellent value for price.