TUNENGE S15 Mini Portable Flashlight User Manual

1. Product Introduction

The TUNENGE S15 is a mini, compact, and portable keychain flashlight designed for everyday carry. It is lightweight, weighing only 21g, making it easy to carry on a keychain. Despite its small size, it delivers a maximum output of 650 lumens and offers a maximum runtime of 40 hours in low light mode, suitable for daily lighting needs. It features a built-in 350mAh Li-po battery that can be fully charged in approximately 35 minutes via its Type-C charging port.

2. Setup

2.1 Package Contents

Please check the package for the following items:

• 1 x S15 Flashlight
• 1 x Type-C Charging Cable
• 1 x Pocket Clip
• 1 x Key Ring
• 1 x User Manual (this document)

Image: Contents of the TUNENGE S15 package.

2.2 Clip Assembly

The S15 flashlight comes with a removable pocket clip for versatile carrying options. To attach the clip, slide it onto the flashlight body until it securely snaps into place. Ensure the clip is oriented correctly for your preferred use (e.g., for attaching to a pocket or hat brim).

2.3 Charging the Flashlight

The S15 flashlight is equipped with a built-in rechargeable Li-po battery. Use the provided Type-C USB cable to charge the device.

1. Locate the Type-C charging port on the flashlight (usually covered by a silicone flap).
2. Insert the Type-C end of the charging cable into the flashlight's port.
3. Connect the other end of the USB cable to a standard USB power source (e.g., a computer USB port, a wall adapter, or a power bank). Ensure the power source provides 5V output.
4. The indicator light on the flashlight will show the charging status:
• Red Light: Indicates the flashlight is currently charging.
• Green Light: Indicates the battery is fully charged.
5. Charging typically takes about 35 minutes to reach full capacity.

Image: Charging process and indicator lights for the S15 flashlight.

3. Operating Instructions

The S15 flashlight features a single side switch for all operations.

3.1 Power On/Off

• To Turn On (Constant Brightness Mode): From OFF, quickly double-click the button. The flashlight will turn on in the last memorized brightness level.
• To Turn Off: While the flashlight is ON in any mode, long press the button.

3.2 Brightness Modes and Switching

Once in Constant Brightness Mode (after double-clicking to turn on), single-click the button to cycle through the brightness levels:

Moonlight (2lm) → Low (35lm) → Medium (350lm) → High (500lm)

3.3 Turbo Mode (Momentary)

• To Activate Turbo: From OFF, long press the button. The flashlight will activate in Turbo mode (650 lumens).
• To Deactivate Turbo: Release the button. The flashlight will turn off.

Image: Operating method diagram for the S15 flashlight.

Image: Visual guide to the 5 lighting modes of the S15.

4. Maintenance

4.1 Battery Maintenance

To maintain optimal performance and longevity of the built-in Li-po battery, it is recommended to charge the flashlight at least once every three months, even if it's not in regular use.

4.2 Cleaning and General Care

• Do not clean the flashlight with harsh chemicals such as soap or detergent. Use a soft, damp cloth if cleaning is necessary.
• Avoid exposing the flashlight to extreme high temperatures. The recommended operating temperature range is -10°C to 40°C.
• If the product is not sealed and tightened (e.g., if any part is loose), keep it away from humid environments to prevent internal electronic components from getting wet.
• Keep the product out of the reach of children.

5. Troubleshooting

If you encounter issues with your TUNENGE S15 flashlight, consider the following:

• Flashlight not turning on: Ensure the battery is charged. Connect it to a power source and check if the red charging indicator lights up.
• Dim light or short runtime: The battery might be low. Fully charge the flashlight. Battery performance can degrade over time; ensure regular charging as per maintenance guidelines.
• Inconsistent operation: Ensure the flashlight is not exposed to extreme temperatures or humidity. If the issue persists, contact customer support.

6. Specifications

Image: S15 compact dimensions.

Image: S15 IP66 Waterproof feature.

7. User Tips

• Brightness for Tasks: Utilize the Moonlight mode (2 lumens) for extended reading or close-up tasks where minimal light is needed, maximizing battery life. For outdoor navigation or finding items, use Medium or High modes.
• Quick Access to Brightness: Remember the double-click to turn on to your last used mode, and the long-press from off for instant Turbo access when you need maximum light quickly.
• Versatile Carrying: Use the included pocket clip to attach the flashlight to your pocket, belt, or even the brim of a cap for hands-free lighting. The key ring allows easy attachment to keys or bags.

8. Warranty and Support

8.1 Warranty Information

This TUNENGE S15 product is covered by a 1-year warranty from the date of purchase. The warranty covers manufacturing defects under normal use. Please note that any defects or damages caused by artificial factors (e.g., misuse, unauthorized disassembly, or improper maintenance) are not covered under this warranty.

8.2 Customer Support

For any questions, concerns, or warranty claims regarding your TUNENGE S15 flashlight, please contact the seller or the official TUNENGE customer support channel where you purchased the product. Please have your proof of purchase ready when contacting support.

9. Important Safety Warnings

• Eye Safety: The S15 flashlight produces a very bright beam. DO NOT look directly into the illuminant or shine it directly into the eyes of people or animals, as this may cause temporary or permanent eye damage.
• Children: Keep the product out of the reach of children. Children under the age of 6 must be accompanied and supervised by their parents before using this product.
• Disassembly: Torch parts must be handled by professional tools. You are not allowed to unscrew them yourself, as this will void the warranty and may cause damage to the torch or personal injury.