Feature

• 3 Colors Display
• (Black, White, Red)
• 2.1 inch electronic ink screen
• Bluetooth Low Energy 5.0 technology
• Product size: 70.9 x 34.6 x 9.4 mm
• Endurance time: 5 Years(Updated 5 times a day)
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Benefit

• Low Power Consumption
• Fast Refresh Speed & Good Stability