Digital Automatic Arm Pressure Monitor Led Rate Machine describe: 1. Voice report Voice report during measurement to prevent disability in the elderly. 2. Long battery life - over 100 measurements on standby for 30 days, and over 100 measurements on a full charge. 3. Multilingual User Manual The user manual is available in Russian, Spanish, Portuguese and English. 4. Smart touch bottom one-button operation. Just touch the switch to automatically obtain accurate readings without further operations. 5. The different colors of the three-color LED display indicate to the user whether they are getting normal readings. Reaming is more intuitive 6. Unique chip core sensing technology intelligently controls blood pressure measurement. 7. 110g packaging size, easy to carry 8. Wrist measurement does not require taking off the cuff. Convenient measurement, reducing errors caused by wear and tear Specifications: Measuring range: 0-280 mmHg (0-37.33kPa) Pulse rate: 40-185 times/min Applicable wrist circumference: 13.5 cm-19.5 cm Accuracy: Pressure + 3mmHg (within +0.4kPa) pulse frequency: accuracy +5% memory: 2 x 99 groups average function: average measurement of the last 3 groups Material: ABS + LED display Power supply: Rechargeable lithium battery Dimensions: 4.9" (L) x 3.9" (W) x 3.3" (H) LED Dimensions: 2.55"*1. 96" Weight: Approx.: 110g Packing list: 1 piece blood pressure monitor