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- USA
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- USA
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
ZB4BG212Main Range of product Harmony XB4 Product or component type Head for key selector switch Device short name ZB4 Bezel material Chromium plated metal Mounting diameter 22 mm Head type Standard Sale per indivisible quantity 1 Shape of signaling unit head Round Operator profile Black key switch Type of operator Stay put Operator position information 2 positions 90 Type of keylock Ronis 421E Key withdrawal position Left Complementary CAD overall width 29
Main
| Range of product | Harmony XB4 |
| Product or component type | Head for key selector switch |
| Device short name | ZB4 |
| Bezel material | Chromium plated metal |
| Mounting diameter | 22 mm |
| Head type | Standard |
| Sale per indivisible quantity | 1 |
| Shape of signaling unit head | Round |
| Operator profile | Black key switch |
| Type of operator | Stay put |
| Operator position information | 2 positions 90° |
| Type of keylock | Ronis 421E |
| Key withdrawal position | Left |
Complementary
| CAD overall width | 29 mm |
| CAD overall height | 29 mm |
| CAD overall depth | 72 mm |
| Net weight | 0.098 kg |
| Resistance to high pressure washer | 7000000 Pa at 55 °C, distance : 0.1 m |
| Mechanical durability | 1000000 cycles |
| Electrical composition code | C3 for <6 contacts using single blocks in front mounting C4 for <6 contacts using single and double blocks in front mounting C5 for <5 contacts using single blocks in front mounting C6 for <5 contacts using single and double blocks in front mounting C7 for <4 contacts using single blocks in front mounting C8 for <4 contacts using single and double blocks in front mounting C11 for <3 contacts using single blocks in front mounting C15 for <1 contacts using single blocks in front mounting |
| Device presentation | Basic element |
Environment
| Protective treatment | TH |
| Ambient air temperature for storage | -40…70 °C |
| Ambient air temperature for operation | -40…70 °C |
| Overvoltage category | Class I conforming to IEC 60536 |
| IP degree of protection | IP66 conforming to IEC 60529 IP67 IP69 IP69K |
| NEMA degree of protection | NEMA 13 NEMA 4X |
| Standards | EN/IEC 60947-1 GB 14048.5 EN/IEC 60947-5-4 EN/IEC 60947-5-5 EN/IEC 60947-5-1 CSA C22.2 No 14 UL 508 |
| Product certifications | DNV LROS (Lloyds register of shipping) CSA BV UL listed RINA GL |
| Vibration resistance | 5 gn (f= 2…500 Hz) conforming to IEC 60068-2-6 |
| Shock resistance | 30 gn (duration = 18 ms) for half sine wave acceleration conforming to IEC 60068-2-27 50 gn (duration = 11 ms) for half sine wave acceleration conforming to IEC 60068-2-27 |
Offer Sustainability
| Sustainable offer status | Green Premium product |
| REACh Regulation | REACh Declaration |
| EU RoHS Directive | Pro-active compliance (Product out of EU RoHS legal scope) EU RoHS Declaration |
| Toxic heavy metal free | Yes |
| Mercury free | Yes |
| RoHS exemption information | Yes |
| China RoHS Regulation | China RoHS declaration |
| Environmental Disclosure | Product Environmental Profile |
| Circularity Profile | End of Life Information |
Contractual warranty
| Warranty | 18 months |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 1650 reviews
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Product Reviews
★★★★★ 5
So far, so good
Color: Black, Number of Items: 1, Color: Black, Number of Items: 1
When Covid hit early 2020, I was sent home to work remotely for the first time in my working life. However, my old chair that is pictured on the right is about 25 years old and no longer has any butt cushion. It quickly became painful to work in that chair all day. I have since moved to a new state and found a remote job I will be starting soon so I decided it was time to upgrade the chair. This is a decent chair if you are on a budget like I am and you are not hard on your stuff adding premature wear and tear. For me, it has good lumbar support which I needed, and more cush for the tush! I am a proportionate 5'2" female and about 125 to 130 pounds. The seat has just enough room for my butt but I don't think I would recommend this for larger people. I would look into sizing up to the big and tall chair. Take note of the seat and back size to know what would work best for you but this chair feels small yet good sized for me only because I was able to go by the measurements of my old chair. Might even be best for you to go into an office supply store to test out chair sizes for comfort before making a purchase. Sometimes I like to sit criss-cross applesauce and this chair has a very nice and smooth rocking motion after loosening the tight/loose knob for reclining and is so comfortable for me that I may fall asleep on the job and get fired. The back of the chair hits just above my neck so I am able to tilt my head back a bit to let it rest since my upper back and neck sometimes go numb after sitting for too long. Ugh, it's just so much fun getting older!!
Assembling the chair was easy until I got to step 4 to put the back of the chair on. If you have another person to hold the chair back for you to align with the chair arm holes and screw in, then you should be OK, but since I had no one to help, I had to take the seat off and lay it down. I still struggled to align the back while the arms were attached to the seat so I removed the arms from the seat and attached them to the chair back and then aligned the seat with the arms and screwed them in. Once done, I inserted the completed assembled seat, chair back, and arm attachments back onto the wheels. The wheels glide very easily and will take you across the room after one push.
I am writing this review the same day I got the chair so will update if I run into any issues. Otherwise, I recommend this chair.
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Reviewed in the United States on February 22, 2022
★★★★★ 4
Comfortable but lack of back support on this chair
Color: Black, Number of Items: 1, Color: Black, Number of Items: 1
I give this chair a 4 star not a 5 star review. Reason for that if you look for the first picture I pst you can see from the back of the chair how it reclines. There is no adjustment to make the back rest come up straight so when your working all day at the desk you is an upright right position. I have to put a pillow behind my back for support cause while working leaning back is uncomfortable and who wants to lean back while working. so there is a lack of back support. .Great gaming chair for that reason. Though I really like the looks and the color of the chair. The material was very soft and the quality was made well. The chair you can make go up or down for the height which is nice. The ability to be able to move the char around while sitting is a plus and the wheels move smooth and with ease. I had to put this together which was simple to do and came with everything I needed when open the box. So before buying if the back support and leaning back isnt an issue for you then this would be the perfect chair for you. Please not the first picture with the darker rug is the chair I got , second picture isnt mine but for a review that their chair was up straight. Isnt the way mine should have come. I didnt questioned or return it because it was so heavy and bulky to take back to a UPS store. I just kept it because everything else was great.
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Reviewed in the United States on January 29, 2026
★★★★★ 5
Beautiful chair with real leather
Color: Light Brown, Number of Items: 1
BEAUTIFUL CHAIR.... so comfortable and worth the price. Extremely easy to put together!! Highly recommend.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Great price and Quality
Color: Khaki, Number of Items: 1
Best money ever spent on an office chair. At the time of purchase, it was less than half the price of local retail stores. Once we received it and put it together, it was top notch. Better than expected. Now time will tell how long it stays that way. Very comfortable, strong material, and easy to adjust.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Comfortable Even After Long Hours
Color: Black, Number of Items: 1
I purchased this chair for my husband’s home office, and it has been a great choice.
The height and angle can be adjusted very easily, making it comfortable to customize. Assembly was also simple and straightforward.
The size is just right, and it remains comfortable even after sitting for long periods of time without causing fatigue.
Overall, the quality exceeded my expectations for the price. If it ever breaks, I would definitely purchase the same one again.
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Reviewed in the United States on May 11, 2026