The Oukitel BT80 military-grade outdoor smartwatch offers a large 2.13" 410x502 AMOLED display, SPO2 and heart rate sensors and waterproofing up to 20 meters. The Oukitel BT80 is now shipping for around $60. OLED type: 2.13" 410x502 AMOLED Tags: OLED devices Wearable devices with OLED displays Posted: May 03,2024 by Ron Mertens