mkw laser shower from 3b scientificThe Laser Shower Power Twin 21 and 21+ from 3b Scientific are FDA- cleared versions of the MKW laser made in Denmark. The 21+ system offers one of the most powerful class 3b multi-diode arrays on the market. These system includes:

  • 21 laser diodes - 100 mW / laser diode
  • Large beam area of 55 cm²
  • Individually adjustable laser settings via a color display
  • Display of operation mode, dose, therapy time
  • Can be switched to a laser comb at the click of a button
  • Continuous ray and multi-frequency mode: Nogier, Bahr, Reininger frequencies have been pre-set
  • Adjustable power level
  • Optional interchangable heads including veterinary comb
  • AC powered
  • 2 Year warranty

These systems offer a great balance of safety (class 3b rating) with high power and a larger treatment area in a reliable package. We recommend the 21+ for most applications.


laser pen with case 3B Scientific Laser Shower Twin 21 & Protocol library (1000mW @808nm)
In Stock
laser pen with case 3B Scientific Laser Shower Twin 21+ & Protocol library (2000mW @808nm)
In Stock
laser pen with case Optional Power Bank for cordless operation
In Stock


Ground shipping to anywhere in Canada and the US is free (including Alaska and Hawaii).

These systems offer both pulsing and continuous wave output.

Here are a few reasons to buy from ColdLasers.Org
Gold Star ColdLasers is a "Brick and Mortar"
Located at 921 Main Street in Louisville, CO, we are no virtual store front, we are the biggest and best PBM store in the US.
Gold Star The Best Support in the Laser Industry
We will do everything in our power to make sure you get unbiased advice, the best training and the best service support.
Gold Star
The Industries Best Protocol Library
Every laser comes with the Laser-Therapy.US library. This app follows the best practices for laser therapy and dynamically creates pictorial treatment plans for over 250 different conditions for humans, pets and horses. This is the best training tool in the industry.
Gold Star No Sales Tax Outside Colorado
The price on the site is the total price if you live outside of Colorado.
Gold Star Warranty Support
All our system include a warranty between 1 and 5 years. If there is a problem, contact us and we will help you.
Gold Star 30-Day Satisfaction Guarantee
Pros get a 30-day 100% money back guarantee on any new system. Home users get a 30-day guarantee but pay a 15% restocking fee.
Gold Star Custom Marketing Support
With any Pro system over $5000, you get a custom marketing kit . We send you original artwork including flyers, pamphlets and posters.
Gold Star The ColdLasers.Org Reputation
Since 2002, we have supported tens of thousands of customers and maintained a 5-Star rating. You can trust ColdLasers.Org.
Gold Star An A+ BBB Accredited Business
As a top-rated BBB business, ColdLasers.Org has established itself as "The Trusted Name In Cold Lasers".
Gold Star Low Price Guarantee
ColdLasers.Org will beat any published competitive price and give you better support and training.
Gold Star Free Shipping
Every cold laser system over $2000 includes free 3-Day shipping to anywhere in the US and Canada.
Gold Star We Accept all Major Credit cards Credit cards accepted
We also accept checks and wire transfers.
Gold Star Financing for Professionals Available
We work with many different financing companies who focus on financing for professional.
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