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โจ Knee Massager with Heat & Vibration โจ
๐น Specifications
Product Name: Knee Massager
Rated Power: 10W
Rated Voltage: 3.7V
Weight: 0.85kg
Package Size: 16 ร 24.5 ร 12 cm / 6.3 ร 9.6 ร 4.7 in
Functions: Vibration massage, Air pressure massage, Infrared heating, Wireless use
Wireless & Rechargeable โ Portable design, easy to use anytime.
4-in-1 Therapy โ Combines vibration massage, heat therapy, infrared & air pressure.
16 Red Light Beads โ Promote circulation, relieve stiffness & pain.
Smart LCD Touchscreen โ Easy operation with clear display.
3D Airbag Compression โ Wrap-around support for the entire knee joint.
Automatic Shut-off Timer โ Safe and energy-efficient.
Important Notice:
This product adopts a two-stage heating switch design for safe and precise temperature control.
Please turn on the power first, then activate the heating function to start warming.
Recommended Use: 10โ20 minutes per session, 1โ2 times per day.
Always start with the lowest intensity or temperature level when using for the first time.
This product is designed for knee care only โ do not use on other body parts unless directed by a professional.
Avoid use on wounds, fractures, or inflamed areas.
Do not use if the skin is swollen, infected, or has poor sensation.
Not suitable for:
Pregnant women
Individuals with pacemakers or metal implants
People suffering from severe cardiovascular disease
Those with skin allergies or who are sensitive to heat
Stop use immediately if you experience dizziness, discomfort, or pain during the session.
Do not use the massager in high-temperature or humid environments (e.g., bathroom or sauna).
Keep away from water, fire, or flammable materials.
Avoid covering the product during heating to prevent overheating.
Allow the product to cool down completely before storage.
Store in a dry, ventilated place, away from direct sunlight.
Use only the provided Type-C charging cable and 2A adapter.
Do not charge or use the device in damp environments.
Avoid overcharging โ disconnect after full charge (about 2โ3 hours).
The heating function will only activate after the second power switch is turned on (double switch protection design).
Wipe the surface gently with a dry soft cloth. Do not wash or submerge in water.
Do not use chemical cleaners, alcohol, or corrosive liquids.
Avoid dropping or striking the product.
When not in use for an extended period, charge it once every 2โ3 months to maintain battery performance.
Issue |
Possible Cause |
Solution |
No heating |
Heating function not activated via second switch |
Turn on the secondary heating key |
No power |
Battery exhausted |
Recharge the device fully |
Weak vibration or sound |
Low power level |
Recharge or increase mode intensity |
Device stops mid-use |
Overheat protection triggered |
Wait 10 minutes before restarting |




















