Voice Blood Pressure Monitor Power supply: plugged in or on battery. (batteyr not included ,not rechargeable) Voice Version Blood Pressure Monitors for Home Use: Tracking your blood pressure daily by one on operate. When you're at home or traveling, you can test your blood pressure anytime. Adjustable Blood Pressure Machine: The cuff of sphygmomanometer is made of high-quality materials, durable and easy to clean. It is surrounded by sticker that can be fixed on the arm. Our BP cuff for home use is suitable for adults with an arm range of 8.7-17inches, providing a comfortable experience for the whole family. Accuracy Blood Pressure Cuff : Blood pressure indicator equips with advanced measurement techniques that gives you not just fast reading method but more accurate results. By measuring the pressure, you can also check your heart rate. Voice Broadcast: When you using this BP machine at home. The voice broadcast will follow up the readings and broadcast for you. This arm blood pressure monitor with clear LED screens also make readings clearer and users can view the results more quickly. Portable Blood Pressure Monitors: Rugged and durable design make it easy to use and store. You can know your physical condition anytime and anywhere, so this really is an indispensable choice for home, office, travel, etc. One-Touch Operation: The digital blood pressure monitor detect both your blood pressure with a push on and power off automatically when finishing. One push on design for easy operation. 48/32cm Cuffs Features: - Professional quality Aneroid Sphygmomanometer Blood Pressure Cuff. - Applies the Digital Blood Pressure monitor to measure the blood pressure - Easy to maintain - Works equally well in hospitals, nursing homes or home health care. - Great for personal home use, travel and office - Precision crafted manometer exceeds industry standards for accuracy Product Size: 1) 22-32CM (regular size, suitable for 99% person) 2) 22-48CM (large size) Use Method 1.Let the bottom of the cuff 2-3 cm from the elbow and make gas nozzle is located inside the arm. 2.The middle of the cuff should be the same height as your heart. 3.①Sit in a chair as shown in the picture, do not lean forward or bend your body. ②Take 3-4 deep breaths before measuring. Relax your shoulders and arms. Make sure your body is relaxed. ③ During the measurement. Do not move your body and wrist. We recommend that you put a soft cushion under your elbow