what type of batteries does this use and are they expensive?

It uses Lithium Battery 3V CR2032. They're not expensive. http://www.walmart.com/ip/INSTEN-5pcs-CR-2032-CR2032-3V-Lithium-Button-Cell-Coin-Battery/31515503

Two questions: 1. Will the scale stay 'on', giving you more time to add or subtract from the substance being weighed?

Yes. Seems like they all should do that since you are using it to precisely measure ingredients. This one does give you plenty of time to add or subtract.

is this weight calibrated?

This scale comes precalibrated with a readability of 1 gram and a weight capacity of 11 lbs. / 5 kg.

can you calibrate unit to a known weight if it gets off? ie the scale initially weighs an object to be 5g but over time the scale shows it as 7g

To calibrate, press the tare button or turn off and back on. Scales that weigh in small increments can easily be influenced by as little as a breeze, product spilled on the scale, or product left in a cup, etc. Placement of product at various positions can also affect the reading. Weight should not creep if item being weighed is left in a static situation. And lastly, a good set of calibration weights are always necessary to assure true readings.

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Smart Weigh Professional USPS Postal Scale with Tempered Glass Platform, Multiple Weighing Modes and Tare Function, Silver Shipping Scale, Platform Scale, 11 pounds/ 5 Kilograms

Smart Weigh Professional USPS Postal Scale with Tempered Glass Platform, Multiple Weighing Modes and Tare Function, Silver Shipping Scale, Platform Scale, 11 pounds/ 5 Kilograms

Product ID: 1144851

Details

Brand
Smart Weigh
Color
Black
Display Type
LCD
Recommended Uses For Product
Home Business
Special Feature
Auto Shut Off

🔄Tare & multi-mode weighing

🧊Tempered glass platform

⚖️11 lbs max precision

S$45

Duties & taxes included

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Description

⚡ Ship Smart, Weigh Smarter — Never Miss a Beat!

BUILT TO ENDURE - Tempered glass platform engineered for daily hustle and heavy packages.
SMART EFFICIENT - Auto shut-off and backlit LCD display keep your workflow smooth and energy-smart.
PRECISION THAT PAYS OFF - Accurate to 0.1 oz/1 g for flawless shipping costs every time.
PRO GRADE PLATFORM SIZE - Wide surface fits larger parcels—perfect for small business scaling.
VERSATILITY AT YOUR FINGERTIPS - Switch seamlessly between lb, oz, g, and ml modes with tare function for ultimate flexibility.

The Smart Weigh Professional USPS Postal Scale combines a durable tempered glass platform with precision sensors delivering accuracy within 0.1 oz/1 g. Supporting up to 11 pounds and multiple weighing modes including tare, it’s designed for small business owners and professionals who demand reliable, versatile, and efficient package weighing for shipping and mailing needs.

Specifications

ASIN	B00FJFJDGS
Best Sellers Rank	#91,912 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #326 in Kitchen Scales
Brand Name	Smart Weigh
Color	Black
Customer Reviews	4.7 4.7 out of 5 stars (2,916)
Display Type	LCD
Form Factor	Countertop
Global Trade Identification Number	00700358199363
Included Components	Digital Scale, USB Cable, Manual, Warranty Card
Item Weight	1.39 Pounds
Manufacturer	Smart Weigh
Material Type	Alloy Steel, Stainless Steel
Measurement Type	lb/oz/ml/g
Model	PL11B
Part Number	PL11B
Readout Accuracy	0.1 Ounces
Recommended Uses For Product	Home Business, Mailing, Postal, Shipping, Warehouse
Special Features	Auto Shut Off, Backlit Display, Large Display, Portable, Tare Function
UPC	065283195423 885233565409 885494961781 700358199363 778295206611 061644263671 885261089106
Unit Count	1.0 Count
Warranty Description	2 Year Manufacturer Warranty
Weigh Scale Type	Counter Scale
Weight Capacity Maximum	11 Pounds

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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Received my product in pristine condition. Great service overall.

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S$45

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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