Sennheiser HD 400S Closed-Back Over-Ear Wired Headphones – Lightweight Foldable Design, Inline Smart Remote, Balanced Sennheiser Sound, Comfortable Noise-Reducing Fit

Name: Sennheiser HD 400S Closed-Back Over-Ear Wired Headphones – Lightweight Foldable Design, Inline Smart Remote, Balanced Sennheiser Sound, Comfortable Noise-Reducing Fit
Brand: Sennheiser
SKU: awhd-us-b07nfq9fqq
Price: 49.97 USD
Availability: InStock

Brand: Sennheiser

Condition: Used

$49⁹⁷

$89⁹⁵

-45% Save $39⁹⁸

Updated: 2 days ago

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Description

Balanced Sennheiser sound: Signature Sennheiser tuning delivers clear mids, detailed highs, and controlled bass for enjoyable everyday listening.

Closed-back design for passive noise reduction: Over-ear fit helps reduce ambient noise so you can stay focused on your music, calls, or work.

Inline smart remote and mic: One-button control lets you play music, pause, skip tracks, and take calls without reaching for your device.

Lightweight and comfortable: Soft ear pads and a secure fit make the HD 400S easy to wear for long listening sessions at home or on the go.

Foldable for easy portability: Durable folding design makes it simple to pack the headphones for commuting, travel, or everyday carry.

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Product Details

SKU:: awhd-us-b07nfq9fqq
Model:: HD 400S
Country:: US
ASIN:: B07NFQ9FQQ
GTIN:: 00615104327870
UPC:: 615104327870

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $40 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for Sennheiser products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.