Lenovo 199-Speed Ice-Cooling Portable Neck & Handheld Fan 4000mAh

Lenovo Ice-Cooling Handheld & Neck Fan – 199 Speeds, 4000mAh Battery

Stay cool wherever you go with the Lenovo JF137 — a next-generation portable fan that combines semiconductor ice-ceramic cooling technology with a powerful 12,000 RPM turbo motor. With 199 precision speed levels, a foldable design, and a built-in neck strap, this fan effortlessly switches between handheld, desktop, and hands-free neck-worn modes. Perfect for outdoor adventures, commutes, workouts, and everyday use. Made in Mainland China.

Key Features

• 199 Adjustable Wind Speeds: Fine-tune airflow to your exact comfort level with ultra-precise speed control shown on a crisp LED digital display.
• Semiconductor Ice-Ceramic Cooling: Advanced rapid-cooling technology drops the airflow temperature by up to 15°C in just 1 second for instant refreshing coolness.
• German Turbo Fan Technology: The 12,000 RPM high-power motor delivers 96% more airflow force, 78% less noise, and 80% better battery efficiency compared to standard fans.
• 4000mAh High-Capacity Battery: Long-lasting USB rechargeable battery (Type-C) keeps you going all day — rated for 8+ hours of continuous use depending on speed setting.
• 90° Foldable 3-in-1 Design: Use it as a handheld fan, fold it flat to use as a desktop fan, or fold the head down and slip the strap around your neck for hands-free comfort.
• Built-in Hang Strap Slot: Integrated side strap slot makes it easy to carry or wear around your neck — no accessories needed.
• Multiple Wind Modes: Choose from Natural Wind, Sleep Wind, or Prevailing Wind to match your environment and preference.
• CE, RoHS & UL Certified: Meets international safety and compliance standards for peace of mind.

Specifications

Button Controls

• Right Button – Short Press: Turn ON/OFF
• Right Button – Long Press: Increase speed level
• Left Button – Short Press: Activate ice-cooling mode
• Left Button – Long Press: Decrease speed level

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Frequently Asked Questions

Q: How long does the Lenovo JF137 portable fan battery last on a single charge?

A: The 4000mAh rechargeable battery is rated for 8+ hours of use depending on the speed level selected. At lower speeds it can last even longer, making it ideal for all-day outdoor use. It charges quickly via the included Type-C USB port.

Q: Can the Lenovo ice-cooling handheld fan be used as a neck fan?

A: Yes! The 90° foldable design allows it to transform between handheld, desktop, and neck-worn modes. Simply fold the fan head down and use the built-in side strap slot to wear it around your neck for hands-free cooling on the go.

Q: What makes the semiconductor ice-ceramic cooling technology different from a regular fan?

A: Unlike standard fans that simply circulate ambient air, the semiconductor ice-ceramic cooling module actively lowers the temperature of the airflow by up to 15°C in just 1 second, delivering noticeably cooler air — similar to the sensation of a gentle breeze on a cool day.

Q: What colors is the Lenovo JF137 fan available in?

A: The fan is available in four stylish colors: White, Pink, Gray, and Purple, so you can choose the one that best suits your personal style.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.