WristOx2 3150SK BLE Wrist-Worn Pulse Oximeter with Wireless Technology, Bluetooth Low Energy; Standard Accessories Include: One 3150BLE WristOx2 Standard Assembly, One PureLight 8000SM-WO2 Medium Soft Reusable SpO2 Sensor, Two AAA Alkaline Batteries, OneWristOx2 3150SK BLE Wrist Worn Pulse Oximeter with Wireless Technology, Bluetooth Low Energy; Standard Accessories Include: One 3150BLE WristOx2 Standard Assembly, One PureLight 8000SM WO2 Medium Soft Reusable SpO2 Sensor, Two AAA Alkaline Batteries, One Wrist Band