SKU: 30999865900

ESP32-S3 4.2 Inch RLCD Full Reflective Display Development Board Supports Wi-Fi & BLE Dual-Mode Communication Without Battery, 33507

Sale price$30.60 Regular price$34.00
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

ESP32-S3 4.2 Inch RLCD Full Reflective Display Development Board Supports Wi-Fi & BLE Dual-Mode Communication Without Battery, 335071. Features a high performance Xtensa 32 bit LX7 dual core processor with a clock speed up to 240MHz 2. Supports 2. 4GHz Wi Fi and Bluetooth 5 (LE) with built in antennas 3. Includes 512KB SRAM and 384KB ROM, while stack integrated with 16MB Flash and 8MB PSRAM 4. Features a 4. 2 inch full reflective display with 300 x 400 resolution, offering reflective imaging and eliminating the need for backlighting 5. Equipped with a dual microphone array


1. Features a high-performance Xtensa 32-bit LX7 dual-core processor with a clock speed up to 240MHz
2. Supports 2.4GHz Wi-Fi and Bluetooth 5 (LE) with built-in antennas
3. Includes 512KB SRAM and 384KB ROM, while stack-integrated with 16MB Flash and 8MB PSRAM
4. Features a 4.2-inch full-reflective display with 300 x 400 resolution, offering reflective imaging and eliminating the need for backlighting
5. Equipped with a dual-microphone array enabling audio algorithms like noise reduction and echo cancellation, ideal for precise voice recognition and near-field/far-field voice wake-up applications
6. Onboard PCF85063 RTC real-time clock and SHTC3 temperature/humidity sensor for precise RTC time management and environmental monitoring
7. Integrated 18650 lithium battery holder and RTC backup battery holder (requires rechargeable RTC battery), supporting dual-mode operation: main power supply and independent RTC backup
8. Onboard Micro SD card slot for external storage of images or files
9. Two customizable side buttons (KEY and BOOT) for developing user-defined functions
10. Reserved 2 x 8-row female header (2.54mm pitch) for external expansion

Specifications
1. Display panel: fully reflective screen
2. Display size: 4.2 inches
3. Display resolution: 300 x 400
4. Gray scale levels: 2
5. Communication interface: SPI
6. Display method: fully reflective
7. Driver IC: ST7305
8. Display colors: black, white
9. Size: about 9.25 x 6.91 cm

Packaging list:
- ESP32-S3-RLCD-4.2-EN host x 1
- Acrylic stand x 2
- 8-ohm 2W MX1.25 2PIN speaker (forward) 80mm x 1
- Screwdriver x 1
Specification:
Package Weight
One Package Weight 0.16kgs / 0.36lb
One Package Size 14cm * 11cm * 4cm / 5.51inch * 4.33inch * 1.57inch
Qty per Carton 60
Carton Weight 12.00kgs / 26.46lb
Carton Size 44cm * 37cm * 35cm / 17.32inch * 14.57inch * 13.78inch
Loading Container 20GP: 468 cartons * 60 pcs = 28080 pcs
40HQ: 1086 cartons * 60 pcs = 65160 pcs

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 30999865900

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Heather T.
Lake Worth, US
★★★★★ 1
Too tight at opening
Size: 13 Little Kid, Color: Light Pink
I bought a size larger for my child, and the foot won’t go in. Her other sketchers slides are great. But I do not recommend this model.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
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Ángela Sánchez
New York, US
★★★★★ 5
Cumplimiento
Size: 13.5 Little Kid, Color: Light Pink
Producto de gran calidad , acorde con lo escrito en la descripción. Llegaron antes del tiempo estimado
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
K
Verified Purchase
Kelly
Port Orchard, US
★★★★★ 5
Very stylish
Size: 3.5 Big Kid, Color: Light Pink
My daughter was so excited to get these shoes. They are stylish and comfortable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
H
Heather T.
Waukegan, US
★★★★★ 1
Too tight at opening
Size: 13 Little Kid, Color: Light Pink
I bought a size larger for my child, and the foot won’t go in. Her other sketchers slides are great. But I do not recommend this model.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
Á
Verified Purchase
Ángela Sánchez
Louisville, US
★★★★★ 5
Cumplimiento
Size: 13.5 Little Kid, Color: Light Pink
Producto de gran calidad , acorde con lo escrito en la descripción. Llegaron antes del tiempo estimado
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026

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