Yunos Fetal Doppler Baby Heart Monitor Device Medical LCD Screen Heart Rate Monito Gel 💗💗Please note that the date on the gel is the production date (not the shelf life), we recommend that this item need use high quality alkaline power battery: like Panasonic alkaline power aa batteries, Nanfu alkaline power aa batteries 💗Specification: 【Product name】:Doppler fetal heart rate monitor 【Battery type】: 2* AA batteries(not include) 【Suitable Range】: 9 week above 【Material】: ABS Plastic 【Color】: Pink+White 【Version】: LCD digital version LCD curve version 【Display】: 45mm×20mm 【Ultrasonic frequency】: 3.0MHz 【Rated voltage】: DC3v 【Waterproof grade】: IP5 dustproof and waterproof grade 【Fetal heart rate range】: 50BPM-230BPM 【Whole weight】: about 171g (without battery) 【Size】: 13.5CM * 10CM/ * 3CM 【Probe Size】: 3.2x10.4cm/1.3"x4.1" 【Probe cable】: 1.5m/59" 【Gel】:250ML 【Fetal heart rate measurement accuracy】: +2BPM (measurement error is less than 2) 💓Package included: 1 x Fetal Doppler 1 x Gel ❤️Feature: 1. Clear Fetal Heart Sound: High performance clear fetal heart sound. 2. LCD Display: Multi-parameter working mode and fetal heart rate display, clear FHR (Fetal Heart Rate) display. 3. Curve display: complete display of fetal heart rate records 4. High Sensitivity: Medical grade, high sensitivity waterproof probe , no radiation to detect,low ultrasound power, safer to the fetus 5. Perfect to listen and record your unborn baby's heartbeat when she is 9 week above. 6. Lightweight and easy to carry, You can share your joy - a healthy and strong heartbeat with your lover, families and friends,whether you are at home or out. 💓How to use: 1. Before using it for the first time, make sure 2 batteries are in 2. Press the power button to power on, then adjust the volume 3. Lie flat with a cushion pillow, keep legs straight and relax 4. Apply the gel to the abdomen 5. Attach the fetal probe to the abdomen to locate the position of the fetus and find out the best direction to the fetal heart 6. After hearing regular fetal heart sound, the FHR value will display on the screen in real time 💖TIPS: 1. Every time the fetal heart rate meter is used, clean and disinfect with a dry cloth or paper towel. 2. If you do not use the machine for a long time, it is recommended to take out the battery and store it well 3. This instrument is a fetal heart rate test tool, which can not replace the conventional fetal heart rate monitoring. If the fetal heart rate result is not credible, use other methods immediately, such as using a stethoscope for verification 4. It should be ensured that the environment in which the instrument is used is not subject to strong electromagnetic interference sources such as interference from wireless transamitters or mobile phones. 5. Suitable for short-term intermittent use.