Product Features

Voice Version: Can make sound and report, including all functions of old version (the no voice version) 
Double 99 memories, IHB irregular heartbeat detection, WHO blood pressure classification
Smart pressure,
Voltage power detection
Product Specifications
Product Dimensions: 77.5mm × 68mm × 30mm (excluding wristband)
Storage temperature: -20 ~ 50 degree
Storage Humidity: 15% to 90%
Operating temperature: 10 ~ 40 degree
Operating Humidity: 40% to 85%
Display: LCD digital display
Measuring method: pulse scanning / oscilloscope assay
Measuring range: hypertension / hypotension: 20mmHg ~ 280mmHg
Pulse: (40 to 200) beats / min
Resolution: 1mmHg (0.1kPa)
Accuracy: ± 3mmHg (± 0.4kPa)
Pulse: ± 3% of reading within
Voltage: 3V
Power Consumption: 0.01W
Packing information
Box volume: 9.2cmX9.7cmX12.2cm,

Batteries are not included

There is no text "JZK-002R" on the surface of Voice version.