Investors and consumers will finally get a look at Apple Inc.'s  (AAPL) iPhone X on Tuesday, Sept. 12, after months of speculation. As CEO Tim Cook takes the stage for the tech giant's event starting at 1 p.m. ET, there are a few stocks to watch that aren't Apple.

There's no way to know a full list of parts suppliers for the new device until a teardown is performed, Bloomberg reported. But some supply chain companies seem to be sure shots in the iPhone X.

In the U.S., stocks to watch include suppliers Skyworks Solutions Inc. (SWKS) , Broadcom Ltd. (AVGO) , Cirrus Logic Inc. (CRUS) and Analog Devices Inc. (ADI) . Inductive and wireless charging pioneer Energous Corp. (WATT) could see a boom as the new iPhone is said to have wireless charging capabilities.

It's also worth keeping an eye on competitors for Apple's new Watch. Garmin Ltd. (GRMN) , Fossil Group Inc. (FOSL) , Swatch Group AG (SWGAY) and Fitbit Inc. (FIT) could seek to compete for market share in a growing smart watch landscape.

In Asia, iPhone assemblers Hon Hai Precision (HNHAF) and Pegatron Corp. (PGTRF) and Apple watch assembler Quanta Computer (QUCCF) are worth watching.

Other Asian-listed shares that could see a boom with increased iPhone and Apple Watch sales include Japan-listed Sharp Corp. Ltd. (SHCAY) , TDK Corp. (TTDKY) , Kyocera Corp. (KYOCF) , Sony Corp. (SNEJF)  , Alps Electric Co. (APELF) and Taiyo Yuden Ltd. (TYOYF) ; and South Korea-listed Samsung Electronics (SSNLF) .

Taiwanese suppliers Hon Hai, Taiwan Semiconductor Manufacturing Co. (TSM) , Largan Precision Co. and Catcher Technology Ltd. (CHERF) are largely credited with pushing the country's stock market to its highest levels since 1990. Hong Kong's AAC (AACAY) is the second-best performing stock on the country's Hang Seng Index in the last six months, up 70% in that period.

In Europe, Dialog Semiconductor (DLGNF) , AMS (AMSYF) , Infineon (IFNNF) , STMicroelectronics (STMEF) and IQE PLC  (IQEPF) are on the list to watch. AMS and IQE have both surged already on reports their parts are in the new iPhone. Dialog hasn't fared as well, falling as Apple is said to seek more in-house capabilities to make the chips Dialog manufactures.

Apple and Broadcom are holdings in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio . Want to be alerted before Cramer buys or sells AAPL and AVGO? Learn more now.

More of What's Trending on TheStreet:

More from Stocks

Stocks End Close to Home

Stocks End Close to Home

General Electric CFO to TheStreet: In 'Wait and See' Mode When It Comes to Trade

General Electric CFO to TheStreet: In 'Wait and See' Mode When It Comes to Trade

Bonds vs. Stocks: What's the Difference?

Bonds vs. Stocks: What's the Difference?

Jim Cramer on Bank of America, Tariffs and the Goldman Sachs CEO Change

Jim Cramer on Bank of America, Tariffs and the Goldman Sachs CEO Change

Nvidia Is Taking Over the Autonomous Driving Industry -- Here's How

Nvidia Is Taking Over the Autonomous Driving Industry -- Here's How