Spire Curvature III Ergonomic Series Keyboard SP-K4008-USB

$ 42.95

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Spire Curvature III Ergonomic Series Keyboard SP-K4008-USB

Introducing the Spire CURVATURE lll, a fully ergonomic keyboard which definetly has its benefits due to its oustanding ergonimic design. It's ability to reduce muscle strain through its extensive design in a shape of a V form, allows the left arm to be positioned in such a way that is natural to the human posture. Tired of have muscle pain, or do you feel like you are sitting in an unatural position when typing on your computer, then this product is specifically made for you! Including multimedia and internet hotkeys features which prove that this keyboard is nothing like your standard unsatisfying keyboard.


  • Curved and slightly titlted design
  • Natural wrist and arm positioning
  • Multimedia keyboard including hot keys for easy access to internet and multimedia functions
  • Compatible with Microsoft Windows 7 / 8 9 / 10 and MAC X and Linux OS
  • High-quality membrane key switches
  • Lifespan: 10,000,000 times
  • Spill liquid proof design
  • 2 years full manufacturer warranty service
Category Ergonomics
Accessories User manual
  • Windows, Mac, Linux and Android OS systems
Cable Length 1.5m
Connector Cable Type USB
Color Black and Silver
  • Ergonomic Design
  • Split keys layout
  • Internet & Multimedia Keys
  • Silent Membrane Key Switches


Housing PBS
Material ABS
Life Expectancy 1000.000
Operating Temperature (°C) -10 to 70
Operating Voltage Range 5V
Packaging Includes
  • User manual
  • Warranty card
Packaging Retail
Packaging Type Color box
Rated Current (A) 0.1
Rated Power (W) 0.25
Safety Approvals CE/EMC/RoHS/REACH
Storage Temperature (°C) -20 to 40
Supports Microsoft Windows 7 / 8 / 10, Mac & Linux
Warranty 2 years
This is a condensed version of our shipping and returns policy, to see all the details including our RMA form please go to either of the following links
Domestic Shipping Information (US and Canada)

*Most orders are processed within 24 hours and are checked frequently Monday - Friday. Orders that placed by 2:00PM PST are usually filled the same day. Some items may contain language with additional processing times. You will be contacted if any items you ordered are no longer in stock.

Shipping Times: UPS Map of Times in Transit Click here  First-Class mail can take 2-7 business days and Priority Mail usually takes 1-4 business days.
95%+ of our items ship out of our local warehouse near Seattle, occasionally we'll have to ship from Oregon, California or New Jersey.

Canadian Customers: There are two ways of shipping to Canada through our website.
First Class Package International & Priority Mail International.
Delivery times for Canadian orders can vary due to International restrictions and customs regulations. Most orders are delivered in 5-14 business days but can take longer (21-45 days) during heavy shipping seasons or in the event of a customs hold which is rare

Military: As a courtesy to our Military personal we will ship by US postal service to an APO, DPO or FPO address. Be advised that US Postal Costs on large orders can be more expensive then comparable UPS shipping. 

Will Call pickup: Purchase on line and select "Will Call" as the shipping method and we'll email you when it is ready for pickup (usually next day). 
Note: Not all our items are warehoused locally and available for Will Call, if there any items on your order not available we will contact you asap
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Special Delivery Instructions: We cannot give any carrier specific information on where to put your packages or whether to hold/require or not require a signature, you must contact the carrier directly after you receive a tracking or confirmation number.

Tracking: Tracking information will be sent to you as soon as it is available, occasionally there is a 24-72 hour delay in sending tracking if any item(s) had to be shipped from an alternate location.
Note: Tracking numbers will be sent you through an automated e-mail system, the email you submit on your order is the email address you will receive your tracking number .

International Shipping

We offer shipping to a select number of International Countries using UPS and USPS, if you do not see your country listed in the shipping dropdown feel free to contact us.

Whether for refund or replacement please use the RMA form at the bottom of this page for all, if you cannot find your order number or have questions send us a message or give us a call through our contact form

For Refund
Our return period for a refund is 30 days from the date of delivery.
To be eligible for a refund, your item must be in new sellable condition and with any original packaging.

For Replacement
All Coolerguy(s), CG and Cabcool branded items come with a 3 year replacement warranty, all other brands we will replace within 30 days after which you must contact the manufacturer. 

Several types of goods are exempt from being returned
Liquid / Water Cooling systems and related items are subject to the terms and conditions of the manufacturer.
Their returns handled direct, if you need additional information on the warranty or help in contacting them let us know.
Additional non-returnable items:
Gift cards