WARMWORLD DocumentationHeated Socks User Manual
Setup, app control, charging, washing and safety notes for the WARMWORLD smart heated socks.
Read before use. Please read this manual carefully before using this product to understand the basics and correct usage, and keep it for future reference. Operating voltage: 5.0 V.
How to use
Method 1 — With the app
Download and install the app
- Search for "warmworld" in the Apple App Store or Google Play Store, then download and install it.
- Or scan the QR code below to open the matching app store and install.
Connect the app
- Turn on Bluetooth in your phone's settings.
- Insert the sock's DC power plug into the battery's DC jack, or press the power button on the battery. The battery level indicator lighting up means Bluetooth is now active.
- Open the app and wait for it to connect automatically.
Control through the app
Once connected, the sock icon in the app lights up.
If only one sock connects
If the connection fails or only one battery connects, close or quit the app, then reopen it and search for the Bluetooth device again.
When both batteries are paired and connected, you can adjust and control the heat level from the app, or press the on/off button on the battery itself.
For a step-by-step first pairing walkthrough, see How to pair your socks. If the app does not find a battery, see Bluetooth not connecting?.
Method 2 — Without the app
Open the sock pocket. Gently pull out the DC cable and connect it to the battery.
Press the button to activate the battery.
Tap the button again to switch the heat level:
- 1st tap: 4 lights on — highest heat
- 2nd tap: 3 lights on — high
- 3rd tap: 2 lights on — medium
- 4th tap: 1 light on — low
Press and hold to power off.
App interface
| Level | Temperature |
|---|---|
| I | 35 °C / 95 °F |
| II | 45 °C / 113 °F |
| III | 55 °C / 131 °F |
| IV | 65 °C / 149 °F |
The control screen labels:
- Battery level indicator — battery charge of each sock
- Bluetooth indicator — connection status
- Quick heating — fast warm-up toggle
- Reference temperature — the current target (e.g. 65 °C)
- Power on / off — start or stop heating
- °C / °F switch — change the temperature unit
- Temperature switch — presets 35 / 45 / 55 / 65 °C
- Heating timer — OFF / 30 / 60 / 90 / 120 / 150 min
See Temperature levels and the timer for more detail.
Charging
Use a compatible USB charger to charge the battery. The battery is fully charged when all four green lights are on.
- Connect to battery — the two DC plugs go into the batteries
- Charger to USB port — output DC 5.0 V = 2 A
More tips in Battery and charging.
Battery indicators
- Power switch — turn the battery on or off
- TYPE-C charging port — for charging the battery
- DC output port — connects to the sock's DC cable
- Level indicator lights — I / II / III / IV heat level
- Battery level lights — 25% / 50% / 75% / 100%
Washing instructions
- Always remove the battery before washing, and tuck the battery cable into the battery pocket. The battery itself cannot be washed.
- Water temperature must not exceed 122 °F (50 °C).
- Place the socks in a laundry bag for machine or hand washing.
Safety notices
- Use the supplied battery to heat the socks.
- Do not use while sleeping at night, to prevent low-temperature burns.
- When not in use, unplug the battery to cut off power.
- Take care of people who are not sensitive to heat.
- This is a household electronic health product only; it must not be used for diagnosis, treatment, or any other commercial purpose.
- Keep the battery away from fire sources or high-temperature objects.
- This is not a toy. To avoid choking children, keep the socks away from them. Do not use in cribs, beds, cars, or playgrounds.
Important
When the socks are not in use, unplug the battery to cut off power.
Certifications: CE · UKCA · Please Recycle.