Flexible Reading LED Hanging Lighting Lamp USB Rechargeable Book Neck Light

2、Functional features
3 color temperature adjustable
3 levels of brightness adjustable
Hose can be bent at will
Built-in rechargeable battery for long life

3、Use instructions

Power on, color temperature adjustment key: short press to switch 3 different color temperatures; long press 2 seconds to turn on the power; long press 2 seconds to turn off the power; short press the third time off to turn off the power.
Long press for 2 seconds to turn on/off,
Brightness adjustment key: short press to switch three levels of light brightness, from low to high.
Short press to turn off the light for the 3rd time; Long press to turn on the light for 2 seconds.

4, Charging

This product uses USB charging, when the battery voltage is lower than a certain value, the power indicator light flashes three times after the lights out, at this time any side of the lamp head unplugged visible USB charging head, inserted into the computer, cell phone charger, mobile power USB port can be charged charging when the red light is on, 2 hours or so can be full, full of indicator lights out.

5、Technical Parameters

Charging voltage:5V
Battery capacity:500MMAh
Charging time:2H
Variable color temperature: cool white (6000-7000K)
Mixed color warm white(2800-3200K),

Battery life: about 8H (each side)