About Us

Sy Kessler Sales, Inc. is the North American head quarters for Renata Batteries of Itingen Switzerland.  “Kessler” is responsible for all of Renata’s OEM electronics sales in North America, while at the same time, for directing all sales and marketing activities for the United States, Puerto Rico, and the U.S. Virgin Islands.  Kessler’s primary markets include the watch and jewelry industry, electronic industry, as well as consumer electronics and hearing aid markets.   

• Renata is a Swiss company more than 50-years-old, and recognized worldwide as the leading producer of quality miniature silver oxide and lithium watch batteries.  Renata is a company born from the Swiss watch industry.  The Swiss lead the watch industry in terms of revenue, and Renata is “the power source” behind the Swiss watch momentum. 

• Renata produces the world’s largest variety of superior quality lithium batteries and battery holders trusted throughout the electronics industry for use in devices ranging from computers and glucose monitors to RFID and tire pressure monitoring devices. 

• Today Renata produces the world’s best performing zinc-air battery for hearing devices.

Kessler has been a trusted partner to Renata since 1980, when Kessler became Renata’s first American distributor.  Kessler became the Sole Importer for RENATA Batteries for the United States in 1983. Over the years, Kessler has sold several hundred million RENATA batteries to customers in multiple industries, including watch, auto, hearing health care, consumer electronic, pawn, grocery and drug stores. Kessler has created multiple kits and custom battery assortments designed to make the transition to RENATA like a "walk in the park!”

Sy Kessler Sales, Inc. is also a manufacturer, importer and master distributor of innovative equipment, tools, supplies as well as gemological instrumentation from around the world. The late Sy Kessler established the company in 1968, and the tradition of servicing friends and customers has continued for two generations. The owners of Sy Kessler Sales, Inc., dba: GemOro Products/GemOro Powerful Ultrasonics, GemOro Superior Instruments, and Renata US are brothers Henry and Daniel Kessler, along with their mother, Sylvia Kessler.

Sy Kessler Sales, Inc., dba: GemOro Products/GemOro Powerful Ultrasonics/GemOro Superior Instruments is the manufacturer, importer and master distributor of many unique and innovative items such as:

GemOro Products: "New Generation" CZ Master Set, "New Generation" DIAscopePRO Signature Series Microscopes & Elite Series Microscopes, Hastings Triplet Loupes, "New" Superior B&L Style Loupes, DIAWHITE Diamond Color Grading Light, SMARTLoupe and Belgium Blue, Belgium White and Belgium Blue/White Diamond Parcel Papers, "New" Hearts & Arrows Scopes, Diamond Selection Guide, Powerful Ultrasonic Cleaning Equipment, Sparkle Spa Personal Ultrasonic Cleaner, Ultrasonic Cleaning Solution, Steam Tech 2002 Steamer, Duo-View Darkfield Loupe and Digital Refractometer/Reflectivity Meter.

As the jewelry industry’s largest manufacturer of ultrasonic cleaners, GemOro Powerful Ultrasonic cleaners are well known for producing the most powerful and durable brand of ultrasonics available.  The development and introduction of its “Turbo Sweep Technology” set even a greater standard for cleaning performance worldwide. 

The leading volume producer of gemological microscopes, GemOro Superior Instruments created and is well known for manufacturing high quality, full-featured microscopes that outperform others which cost significantly more at a fraction of the cost.  GemOro Superior Instruments with its DIAscopePRO

"Signature Series" and Elite Series provide the affordable solutions for microscopes used by professional gemologists, jewelers, diamond dealers, gem dealers and pawnbrokers worldwide.

Sy Kessler Sales, Inc. is the exclusive worldwide master distributor for Ceres Electronics, the leading manufacturer of diamond and moissanite testers.  Their testers include the famous CZeckpoint, Reliance, Reliance AC, Diamond Probe II, Secure II and the "New Generation" Dual XL simultaneous diamond and moissanite tester.

Sy Kessler Sales, Inc. is the exclusive jewelry/pawn market master distributor for My Weigh and Jennings Scales, the new leading pocket scale, as well as counter-top portable scale producers. Because of their scales high quality and durability, My Weigh was the first and only major scale manufacturer to offer an unprecedented "Lifetime Limited Replacement Warranty". Jennings, of the My Weigh family, as their scales also perform to the highest of standards, feature an impressive "5 Year Replacement Warranty". As the industry's electronic scale specialist, we are recognized worldwide as one of the largest stocking master distributors for the leading manufacturers.  We are the largest dedicated jewelry/pawn market wholesaler of OHAUS scales in N. America.   

Sy Kessler Sales, Inc. ranks among the world's leading master distributors of famous brands such as:  Multisizer "Finger Sizers", Hoffman / New Yorker Steam Cleaners, Presidium Engravers & Gem Gauges, Wildman Instruments, Gemological Products, GemPro, Lumina, Nebula and Dazor.

Within our line of products, we feature a variety of gemological instrumentation including:  GemPro Refractometer, GemPro Port-A-Pac Mini Lab & Polariscope, Refractive Index Liquid, GemOro Digital Refractometer/Reflectivity Meter, Calcite Dichroscope, Chelsea Filter, Presidium Gauges, A.D. Leveridge Style Gauges, Digital Gauges, Baush & Lomb "Style" Hastings and Coddington Loupes, Dazor Lamps, Lumina Fiber Optic Lighting System, UV "Ultra Violet" Detection Lights, Full Spectrum/Daylight Light Tubes & Lamps.

We have established an excellent reputation worldwide for offering very high quality, innovative products that we stand behind, as we support our customers and their customers too.

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How to order products from Sy Kessler Sales, Inc.