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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Sink or Float? STEM Activity SetYoung learners can dive into early physics in a fun, colorful way with this two piece submarine and floating raft along with weights, balls, and stars. Ten detailed Activity Cards include over 20 engaging, high impact activities that cover all aspects of STEM, plus key science concepts of buoyancy, density, and more! Comprehensive Activity Guide with reproducible materials is also included. Submarine measures 6"L x 3"H. Grades K and up. SMALL PARTS.
- Young learners can dive into early physics in a fun, colorful way with this two-piece submarine and floating raft along with weights, balls, and stars.
- Ten detailed Activity Cards include over 20 engaging, high-impact activities that cover all aspects of STEM, plus key science concepts of buoyancy, density, and more!
- Comprehensive Activity Guide with reproducible materials is also included.
- Submarine measures 6"L x 3½"H.
- Grades K and up.
- ⚠SMALL PARTS. Not for Children under 3 years.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 208 reviews
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Product Reviews
★★★★★ 5
Great Mechanical Self-winder
Color: Black
Wow! So far I have only adjusted the time three times over the last few months. So far It keeps great time and looks good.
Well worth the money after having blown a few dollars on less expensive mechanical watches that fail after only a few months of use.
This thing is very good!
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Reviewed in the United States on December 11, 2024
★★★★★ 4
Beautiful
Color: All black
Having never previously owned a self-winding watch, and because the wristband did require some link-removal adjustment, I did hold off on wearing it for a few days until I could schedule an appointment with my jeweler to have the day/date setting and band-adjustment done. But a major part of my reason for doing so was my strong impression upon receipt of the watch that this was a very good choice. It is a very beautiful watch to look at, though compact and not overly bulky like many chronograph-style watches, its' heft conveyed a sense of a very solid, well designed and constructed watch. Since having the setting and adjustments done, I have been extremely pleased with how accurately it keeps time. In short, I LOVE this watch. I will also note this. Though my jeweler retails various high-end, and much more expensive watches, he was clearly impressed with the look and feel of this watch, and even made explicit comment about what a beautiful watch he felt it was. That said, I do have a quibble. The writing of the accompanying instruction booklet was riddled with English grammatical errors which were quite frustrating, and contributed to my reason for opting to have my jeweler complete the settings and adjustment. Also, when I contacted OLEV online to solicit guidance on how to expedite registering the purchase for warranty purposes, I received an email auto response saying that any Amazon purchase would require customer service and other guidance through the seller. Since my assumption upon Amazon purchase was that I WAS purchasing from OLEV as the seller, this remains a source of confusion which I yet need to resolve.
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Reviewed in the United States on January 3, 2024
★★★★★ 1
Doesn’t keep accurate time
Color: All black
I bought this for my husband because it said that it self winds but my husband noticed that it didn’t work within the first few days so I thought maybe it was defective so I purchased another one in exchange for the first one but the second one had the same issue. Don’t waste your money on this, it doesn’t work.
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Reviewed in the United States on March 14, 2025
★★★★★ 3
Substandard,always donated of time when it works.it had be set on a daily
Color: Black
Stops frequently,sometimes have to give a few days for the clock to start functioning sgain
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Awesome watch highly recommend
Color: All black, Color: All black
My husband bought me this brand of watch for my birthday and it’s so awesome. It looks blingy but not in a bad way. Kinda looks like a Rolex. No battery.I bought him a one and he loves it .
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Reviewed in the United States on October 22, 2025