what is the warranty for and how long is it?

I don’t think there is a warranty for it. However, if it’s defective call the company. They seem to be really good at doing the right thing

Can you confirm the voltage rating of the power cord? only 110v or up to 240v? thank you.

The power supply will work with 100-240v. It has a US plug.

Mine didn't come with an instruction booklet. Where can i find one online or request one?

Contact Amazon or the Seller about getting a booklet. As for online guidance, doing a quick google search on how to use a rock tumbler will help. You can also put your tumbler info into youtube and see someone setting it up and using it. A quick search of Amazon shows several books on rock tumbling as well as gemstone/rock identification.

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アドバンスプロフェッショナルロックタンブラーキット - 研磨用9日間のデジタルタイマー&3段階速度設定 - 粗い岩を美しい宝石に変身すべての年齢のお子様のための科学&STEMギフトに最適：地質学のおもちゃ。

アドバンスプロフェッショナルロックタンブラーキット - 研磨用9日間のデジタルタイマー&3段階速度設定 - 粗い岩を美しい宝石に変身すべての年齢のお子様のための科学&STEMギフトに最適：地質学のおもちゃ。

Product ID: 744071285

Details

サイズ
33 x 23 x 14
テーマ
地質学
ブランド
Dan&Darci
商品寸法 (長さx幅x高さ)
32.3 x 25.4 x
対象年齢
大人

⏳9-day digital timer

🔇Low-noise leak-proof barrel

⚙️3-speed settings for precision

$386.05

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In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Turn raw stones into dazzling treasures — polish your passion for science!

WHISPER QUIET LEAK PROOF DESIGN - Enjoy a peaceful workspace with durable, mess-free operation.
PRECISION CONTROL WITH 3 SPEED SETTINGS - Customize your finish from coarse to ultra-smooth effortlessly.
TRANSFORM ROUGH ROCKS INTO STUNNING GEMS - Experience the magic of geology with professional-grade polishing.
STEM APPROVED EDUCATIONAL FUN FOR ALL AGES - Ignite curiosity and hands-on learning in kids and adults alike.
SET IT AND FORGET IT WITH 9 DAY DIGITAL TIMER - Perfect timing for flawless results without constant supervision.

The Dan&Darci Advanced Professional Rock Tumbler Kit is a high-quality STEM educational tool designed to polish rough stones into beautiful gems. Featuring a powerful, durable motor, a low-noise leak-proof barrel with 1-pound capacity, 3 adjustable speed settings, and a 9-day digital timer displayed on an LCD screen, this kit offers precision and convenience. Complete with assorted rough stones, grit packets, jewelry fasteners, and a learning guide, it’s perfect for all ages to explore geology and mineralogy through hands-on science.

Specifications

ASIN	B07Q32W334
Amazon 売れ筋ランキング	おもちゃ - 406,690位 ( おもちゃの売れ筋ランキングを見る ) 岩石・鉱物の実験・科学 - 444位
UPC	855831008158
おすすめ度	4.5 5つ星のうち4.5 (9,066) var
お客様の年齢層	大人
サイズ	33 x 23 x 14 cm
テーマ	地質学
ブランド名	Dan&Darci
メーカー名	Dan&Darci
メーカー型番	DD-007
メーカー推奨最少年齢	96.00
メーカー推奨最高年齢	1296.0
ユニット数	1 個
同梱商品	ジュエリーファスナー、メッシュストレーナー、電源コード、スペアモーターベルト。, ロックタンブラー、0.55ポンドの粗い石詰め合わせ、グリットパケット4個。, 取扱説明書+学習ガイド(日本語ではない場合があります)。
商品本体サイズ	32.3 x 25.4 x 14.5 cm
型番	Rock Tumbler
教育目的	STEM
材質タイプ	金属
組み立て式	いいえ

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$386.05

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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アドバンス プロフェッショナル ロックタンブラーキット - 研磨用9日間のデジタルタイマー&3段階速度設定 - 粗い岩を美しい宝石に変身 すべての年齢のお子様のための科学&STEMギフトに最適： 地質学のおもちゃ。

Details

Details

Description

Specifications

Common Questions

アドバンスプロフェッショナルロックタンブラーキット - 研磨用9日間のデジタルタイマー&3段階速度設定 - 粗い岩を美しい宝石に変身すべての年齢のお子様のための科学&STEMギフトに最適：地質学のおもちゃ。