You can buy it on Apple official website.

If you wanna buy the tester of POWER-Z, you can visit our Amazon store: Click here.

Introduction
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Most of the products that were released at Apple event have been on sale. But we still need to wait until later this fall to see the Apple Watch Series 7 But today, we got the charger of Apple Watch Series 7. Apple announced it only takes 45 minutes to charge from 0% to 80% Let’s see what’s inside.

Bill of materials (BOM)
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Wireless Charging Controller: STM32L433RC
Dual MOSFET driver: TI TPS51604
Voltage Regulation Chip: Customized, marked with 338S00810-A0