- Nerve and muscle stimuatorr SDP-330 YUWELL - electrostimulator is a modern device that provides comfortable analgesic currents TENS and gives the effect of slimming and muscle development EMS. It is a one-channel device that simultaneously supports up to 4 electrodes. A built-in efficient battery charged via the USB port or optionally a power supply. Model is tiny and light, that making it ideal for both home and traveling. Product Features: - Comfort Strength: 9 levels of strength help you quickly find the strength you need.1-3 level: mild force slight current for sensitive parts;4-7 level: moderate strength the choice of people suffering from moderate pain;8-9 level: great strength the choice of people suffering from moderate to severe pain. - Multiple Modes: Knock, press, Knead; - Smart Chip, Accurate ControlScan chip: high reliability, low voltage, low strength consumption, strong control ability and more stable performance. - Chargeable, Convenient single full charge can meet 300 times usage. - Multi-dimensional Somatosensory Adjustment The width, amplitude and frequency of the output pulses are controlled by intelligent algorithms to make them organically combined for multi-dimensional somatosensory adjustment. - Load Detection for Escorting Massage, safe Automatic Shutdown after 15 Minutes. If the electrode piece is not properly installed or detached, the device will flash to remind the user to adjust it for better use. According to the study of physics and bioelectricity, long-term treatment or strong stimulation of the same part may cause muscle fatigue and cause adverse effects. In order to avoid over-treatment, The device will be automatic strength-off after using for 15 minutes. - Large area washable fit more wear resistant The electrode physiotherapy area is large, it is easier to fit the skin, wear resistance is stronger, it can be washed, normal maintenance, repeated use 300 times.