Stirlingtechonline is exclusive distributor and the owner of the brand 'SunnyTech'----Please be sure you receive an authentic SunnyTech stirling with SunnyTech logo and only sold by Stirlingtechonline to ensure 1-year 100% Satisfaction Guarantee.
Material---Durable Black WOOD base, nylon strings, metal balls, stainless steel frame
Swing time---The balls continue in perpetual motion for ONLY 15-25 SECONDS due to the resistance of the air and friction. Newton's Principle that 'action and reaction are equal and opposite.
It's a classic desk accessory is art-in-motion.This cool desk toy will be a good icebreaker when you lay it in your office desk or your home desk. Use it to waste time, relieve stress, tune out boring coworkers, or schooling youngsters in physics.
It is a amazing and fantastic product at this price,it can be a great gift to your families or friends. It also can be used for teaching purpose. Many of our customers comes from school, colleague,etc. Easy to install and uninstall. Need you install the shalf on the wooden base, 10seconds DIY work.Video link:http://v.youku.com/v_show/id_XMTI1NzU4Njk5Ng==.html

Technical Details

Product Details

Package Dimensions
Width : 3.07 inch
Height : 1.26 inch
Length : 4.09 inch

Shipping Weight: 6.72 ounce (View shipping rates and policies)

ASIN : B01MUBXHSC