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Haider BioSwing 660 iQ Trendline Chair - Black Leather

Haider BioSwing 660 iQ Trendline Chair - Black Leather

Regular price £999.99
Regular price £999.99 Sale price £3,231.00
Sold out

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Haider BioSwing 660 iQ Trendline Chair - Black Leather

Regular price £999.99
Regular price £999.99 Sale price £3,231.00
SAVE 69% Sold out

Shipping and Handling

Order cutoff time: 5:00 PM (GMT), Monday to Friday. Orders placed after this time will be processed on the next business day, which may slightly extend the estimated delivery time frame.

Order handling time: 1–2 business days (Monday to Friday). Once your order has been processed, it will be dispatched using one of our trusted carriers.

Transit time: 2–5 business days for standard delivery.

Estimated delivery time: 3–7 business days, depending on the delivery service and your location.

Refunds and Returns

We offer a 30 day return window for unused items. Simply contact our support team to initiate a return.

You can email us at anytime at :

info@sereniya.com

You can also call us at anytime at :

+44 7306618289

Haider BioSwing 660 iQ Trendline Chair was designed and built in Germany and is the only ergonomic office chair that does not use a fixed connection from the seat to the ground.

The Haider BioSwing 660 Chair uses a free-hanging mechanism as well as 3D technology. The 3D seating system provides controlled and free movement between the backrest and the seat. This allows the body to be ergonomically aligned when sitting, without any lateral tilt for a more comfortable posture.

Active movement and regular posture changes are good for your spinal column. With the standard individually adjustable seat tilt adjustment and pelvic stabiliser with a wonderfully soft response, you can easily align your pelvis correctly and at the same time position your spine in the natural S shape. This activates additional potential for the body and mind.

The BioSwing 660 IQ Trendline also features:

  • Ergonomic office swivel chair with orthopaedic effect
  • Integrated, adaptive 3D seat mechanism
  • Synchronous mechanism with automatic weight adjustment (along with fine adjustment)
  • 3D armrests for multifunctional adjustment to suit various working positions
  • Individual seat tilt adjustment with gas spring, continuously adjustable
  • Additional pelvic stabiliser
  • Sitting depth can be adjusted to suit leg length
  • Backrest with adjustable height, additionally with lumbar support, with individually adjustable curve
  • 3D neck support with continuous adjustment of height, depth and tilt
  • Adjustable 4F armrest in black leather.
  • 5-star polished base.
  • Black leather upholstery with matching neck rest
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  • ★★★★★

    Worth Every Penny

    "I'm usually skeptical about ordering from brands I don't know — but Sereniya delivered exactly what they promised. Quality, fast shipping, and a brand that actually cares. I'll be back."

    Sarah M. — Verified Buyer

  • ★★★★★

    The Quality Speaks for Itself

    "You can tell when a brand actually cares about their products. Everything from Sereniya feels considered — the materials, the packaging, even the unboxing. So glad I found them."

    Emma L. — Verified Buyer

  • ★★★★★

    Part of My Daily Routine

    "Sereniya has become part of my everyday wellness routine. Small daily upgrades that genuinely make a difference — that's the magic."

    Rachel B. — Verified Buyer

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FAQ

What Payment Methods Does Sereniya Accept?

At Sereniya, we provide a selection of secure payment options to make your shopping experience smooth and convenient. We accept the following:

Credit & Debit Cards: Visa, MasterCard, American Express

Digital Wallets: Apple Pay, Google Pay, Shop Pay

Online Payments: PayPal

Buy Now Pay Later: Klarna (where available)

You can visit our Billing Terms and Conditions for more information

How Long Does Sereniya Shipping Take?

Order Cutoff Time

5:00 PM (GMT)

Orders placed after this time will be processed the next business day, which may add one extra day to the delivery estimate.

Order Handling Time

1–2 business days (Monday–Friday)

Once your order is processed, it will be shipped by one of our trusted carriers.

Transit Time

6–8 business days (Monday–Friday)

Estimated Delivery Time

7– 10 business days

Please note that delivery times are estimates and may vary due to factors outside our control, such as carrier delays, weather conditions, or high seasonal demand.

What Is Sereniya’s Return Policy?

We offer a 30 day return window for unused items. Simply contact our support team to initiate a return. You can email us at anytime at info@sereniya.com and we will be happy to assist you.

How Can I Contact Sereniya Support?

You can contact us at anytime

Email : info@sereniya.com

Phone : +44 7306618289

Customer service hours : Monday to Friday : 9:00 am - 5:00 pm (GMT)

We do our best to reply to your email within 1-2 business days.

Comfort & Relief You Can Feel Every Day

Experience lasting comfort and reliable support designed to help you move with ease, feel better throughout the day, and enjoy a more relaxed, pain-free lifestyle.

Wellness, Made Simple

At Sereniya, we believe everyday comfort should feel effortless. Our products are designed to support your well-being in the moments that matter — whether you're at home, at work, or on the move.

Designed for Everyday Comfort

At Sereniya, we believe comfort should be effortless and part of your daily life. Our products are thoughtfully designed to support your body, improve posture, and help you feel your best—whether you’re working, relaxing, or on the go. Experience comfort that works with you, not against you.

  • Free Shipping

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  • Responsive Customer Support

  • 30-day Easy Return