What is the dot on top for? How or when does it improve your shot? What's the explanation or physics behind it?

I posted a review exposing this scam product, but Amazon deleted it - they'll probably delete this as well. There is no physics behind it; it simply makes the ball spin fast. If you put the ball in this "alignment" device 10 times, you will get 10 different black lines around the ball. It does not find an "optimum equator" and it will not improve your shot in any way. Those are the facts, but other people may want to give you some "alternative facts."

where do i buy check-go pens

We no longer carry the replacement pens. I googled Pro Active Check and Go pens and up came a company that had the pens for sale.I hope this helps.

What replacement pen do you use?

Use a WASHABLE Crayola marker first to put temporary Center of Gravity spot and Straight line. Remove ball from spinner and use a Fine Tip Sharpie pen to permanently mark the Center Spot and then put the straight line on over the washable line. Let Sharpie marks dry and wash off washable marks. Use the washable marker to do the first marks cause if you use a Sharpie first you'll have messy ball marks. Replacement pens use a Sharpie.

Proactive Sports Technasonic Check Go Pro Sweet Spot Electronic Golf

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 197.94

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Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎯 Unlock your ball’s hidden power and play like a pro every round!

READY OUT OF THE BOX - Includes batteries, marker, and manual so you can start improving your game immediately.
SPIN POWERED PRECISION - Utilizes 10,000+ RPM spin technology to detect the perfect hitting zone, reducing hooks and slices.
GAME CHANGING ALIGNMENT - Draws a clear equator line on your ball, ensuring straighter, longer shots every time.
UNIVERSAL COMPATIBILITY - Works seamlessly with all 2-piece golf balls, elevating performance regardless of brand.
PINPOINT YOUR SWEET SPOT - Calibrates any golf ball’s true balance equator in just 30 seconds for optimized play.

The ProActive Sports Technasonic Check-Go Pro Sweet Spot Electronic Golf Ball Liner is a cutting-edge golf training aid that identifies the true balance equator of any golf ball in 30 seconds by spinning it at over 10,000 RPM. This patented technology marks the ball’s Sweet Spot, helping golfers reduce hooks and slices while increasing distance and accuracy. Compatible with all 2-piece golf balls, it comes complete with batteries, a marker, and a manual for instant use.

Specifications

ASIN	B000IMDIAY
Age Range Description	Adult
Age range (description)	Adult
Ball Type	golf ball
Best Sellers Rank	#51,911 in Sporting Goods ( See Top 100 in Sporting Goods ) #90 in Golf Ball Markers
Brand	ProActive Sports
Brand Name	ProActive Sports
Color	Red
Colour	Red
Construction Type	2-piece
Customer Reviews	3.8 out of 5 stars 1,511 Reviews
Global Trade Identification Number	00021089000040
Included Components	Check Go Pro, batteries, marker, manual
Item Type Name	Sweet Spot Electronic Golf Ball Liner
Item Weight	295 g
Item weight	295 g
Manufacturer	Technasonic
Manufacturer Part Number	DBL006
Material	Plastic
Material Type	Plastic
Model Number	DBL006
Number of Items	1
Size	Taglia unica
Sport	Golf
Sport Type	Golf
Stitching Type	Sewn
UPC	021089000040
Unit Count	1.0 Count

Reviews

A**ー

プレゼントに

誕生日プレゼントにリクエストされました。とても喜んでいました。

17.12.2025

C**N

FACILE A UTILISER ET UTILE

aide à marquer les balles et surtout à les trier suivant les balourds et les effets (ou pas) que l 'on veux donner

3.12.2019

T**N

1st class service and Item

This product does what it says I would have liked a couple spare pens when sold but not a big issue

19.12.2018

C**N

efficace fait un bon travail

super mais il ne fournisse qu'un seul crayon et très difficile a trouver.

15.12.2025

J**C

Excelente producto

En general como se describe, muy buena calidad y CREO que funciona correcto y con lógica.

19.05.2019

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