Why is this unit more than twice the price of the "acelete auto-start 2.0 power ball wrist trainer ..." ?

I can attest to that. My NSD powerball lasted four and a half years. With the same amount of use, my Acelete lasted only a month and a half.

noise level ? can I use this at a silent environment like office ?

Yes. Our surgeons use them in their offices while on the phone. It makes very little noise. Sort of a brushing sound.

does it have led light ?

No, all NSD Spinners with ergonomic/rubber band in black are not equipped with LED lights. However, the Speedometer on the top goes with self-powered back LED light when you spin and reach 3,000 RPM.

What is the difference between the nsd power and nsd titan? the price is as twice as big for titan

Their Material and Size are different. PB-688 series Spinner are made of military-grade plastic while PB-888 Titan series are made of zinc rotor and Aluminum Alloy shell. PB-688 is a tennis ball sized Spinner while PB-888 is as big as a softball.

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Description

⚡ Spin Stronger, Work Smarter — Grip Gains Without the Gym FOMO!

ERGONOMIC GRIP GAINS - Beginner-friendly, low-impact wrist and forearm training that fits seamlessly into your busy lifestyle.
AUTO START POWER LAUNCH - Effortlessly reach 15,000+ RPM with a simple thumb push—no batteries or strings needed.
MILITARY GRADE DURABILITY - Built with zinc rotor, stainless steel axle, and rugged plastic for vibration-free, stable performance.
ANYWHERE ANYTIME STRENGTH - Lightweight and compact—perfect for office desks, travel, or quick sessions on the go.
INSTANT CONTROL SMOOTH RIDE - Pre-tensioner lets you start and stop on your terms for a fluid, fatigue-free workout experience.

The NSD Auto-Start Spinner Gyro Ball is a premium hand and wrist strengthener that spins over 15,000 RPM delivering 24.9 lbs of torque resistance. Designed with military-grade materials and a smooth, vibration-free mechanism, it offers a beginner-friendly, portable workout solution for improving grip strength, forearm endurance, and pain relief—no batteries or cords required.

Specifications

Color	Black
Material	Plastic
Brand	NSD
Item Weight	0.25 Kilograms
Style	Without Digital LCD Counter
Tension Level	Heavy
Product Dimensions	5.12"L x 3.15"W
UPC	848663000278
Global Trade Identification Number	00848663000278
Manufacturer	NSD Power
Item Package Dimensions L x W x H	5.16 x 4.61 x 3.11 inches
Package Weight	0.35 Kilograms
Item Dimensions LxWxH	5 x 2.56 x 0.04 inches
Brand Name	NSD
Warranty Description	If you'd like a copy of the manufacturer's warranty for a product found on Amazon.com, you can contact the manufacturer directly or visit their website for more information, or you can contact our Customer Service team by e-mailing us at: [email protected]. If you choose to e-mail our Customer Service team, please include the full name of the product; the model or style, if applicable; and the URL (website address) for the product's detail page. Manufacturer's warranties may not apply in all cases, depending on factors like the use of the product, where the product was purchased, or who you purchased the product from. Please review the warranty carefully, and contact the manufacturer if you have any questions.
Model Name	PB-688A Black
Suggested Users	unisex-adult
Part Number	PB-688A Black
Model Year	2016
Included Components	Plastic shells, Stainless steal axle, Zinc rotor
Size	5 x 3 x 4.50"
Sport Type	Airsoft, Basketball, Boating, Bowling, Cycling, Golf, Hunting, Martial Arts, Tennis
Skill Level	Beginner

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