MOQ flexible. Bulk orders get additional discounts. OEM branding available.
4.2" flagship BLE ESL — no gateway, lowest deployment cost for 3C retail
Smartphone app management — instant updates, no infrastructure needed
400×300 resolution — can display product images, specs, and pricing
4-color BWRY for bold promotional displays and flash sale tags
5+ year battery — zero maintenance for flagship demo units
IP54 rated — reliable in high-traffic 3C retail environments
Star product for flagship phone, smartwatch, and smart home showcases
| Display Technology | E-Ink (Electronic Paper) |
| Screen Size | 4.2" |
| Resolution | 400×300 pixels |
| Display Colors | Black / White / Red / Yellow (4-color) |
| Communication | Bluetooth 5.0 (BLE) |
| Gateway Required | No — smartphone app control |
| App Range | ~10 meters from smartphone |
| Battery Life | 5+ years (typical usage) |
| Operating Temperature | -10°C to +60°C |
| IP Rating | IP54 (Dust & Splash Resistant) |
| Material | ABS plastic housing |
* Specifications subject to change without notice. Contact us for the latest datasheet.
BLE-420BWRY Electronic Shelf Label (Bluetooth) — 4.2" E-Ink electronic shelf label (ESL) featuring Black / White / Red / Yellow (4-color) 4-color display. Powered by Bluetooth 5.0 (BLE). No gateway needed — smartphone app control. Battery life up to 5+ years. IP54 rated for dust and splash resistance. Operating temperature: -10°C to +60°C. Ideal for 3C flagship stores, electronics retail, smart home showcases, premium boutiques.
Tocvue ESL labels use ultra-low power E-Ink (electronic paper) technology — the same display used in Kindle e-readers. The screen only draws power when the content changes, resulting in a 5+ year battery life. No backlight needed — paper-like readability from any angle, even in direct sunlight.
The BLE-420BWRY is available in two connectivity versions: SLIM Series (2.4GHz) requiring the CEDAR V3 AP gateway for centralized management of hundreds of tags, and BLE Series (Bluetooth 5.0) requiring no gateway — controlled directly from a smartphone app. Choose the version that best matches your store size and deployment requirements.
Factory-direct from Tocvue — professional ESL manufacturer since 2014. Contact us for wholesale pricing, sample units, and OEM customization.
Contact us for wholesale pricing. MOQ flexible. Samples available.
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