The Sennheiser HD 400S is a wired, closed-back, over-ear headphone with a one-button remote and microphone on the cable. It is an earlier Sennheiser model that folds for carrying.

At 18 ohm impedance it runs directly from a phone or laptop with a 3.5 mm jack. The cable detaches, and Sennheiser lists a 1.4 m cable with an angled 3.5 mm plug.

Key Features

• Sound: Dynamic drivers, 18 Hz to 20,000 Hz frequency response.
• Design: Closed-back, over-ear, with a folding construction.
• Remote and mic: One-button remote on the cable with an omni-directional microphone, 100 Hz to 10,000 Hz.
• Cable: Detachable RCS 400 single-sided cable, 1.4 m, angled 3.5 mm plug.
• Weight: 217 g.

Specifications

Frequently Asked Questions

Does it work with iPhone and Android?
It has a 3.5 mm plug with an inline remote and mic, which works with phones and laptops that have a 3.5 mm headset jack. Remote function depends on the device.

Is it Bluetooth?
No. It is wired only.

Does it fold?
Yes, Sennheiser describes a sturdy folding design.

Can I replace the cable?
The cable is detachable. Sennheiser lists the RCS 400 as its cable accessory.

Is this genuine Sennheiser?
100% genuine, warranty-backed, delivered across India.

Shipping & Delivery

We aim to deliver your order quickly and safely across India.

• Orders are usually processed within 24–48 hours (excluding Sundays & holidays)
• Once shipped, delivery typically takes 2–7 business days, depending on your location
• You will receive a tracking link via SMS/email once your order is dispatched
  

Shipping Charges

• Shipping charges (if applicable) will be displayed at checkout
• Free shipping may be available on select products or order values
  

Order Tracking

• Track your order anytime using the link shared after dispatch
• For any assistance, feel free to contact our support team
  

Important Notes

• Delivery timelines may vary due to courier delays, weather, or unforeseen circumstances
• Ensure your address and contact details are accurate to avoid delays
• We currently ship only within India

Easy 7-Day Support

We offer 7-day support from the date of delivery in case of:

• Damaged product on arrival
• Manufacturing defects
• Incorrect item received
  

Conditions for Return/Replacement

To be eligible:

• Product must be unused and in original condition
• Must include original packaging, accessories, and invoice
• Issue must be reported within 7 days of delivery
  

Non-Returnable Items

• Used or physically damaged products
• Products without original packaging
• Items damaged due to misuse
  

How to Request

• Contact us via email or phone with your order ID and issue details
• Share images/videos if required for faster resolution
• Our team will guide you through the next steps
  

Refunds (if applicable)

• Refunds are processed after product inspection
• Amount will be credited to the original payment method within 5–7 business days