USB LED short grow light

USB LED short grow stick lamp perfect for seeding stations or plant lighting. low voltage for energy saving.  Use these grow lights for a range of plants form herb & vegetable gardens, bonsai, cactus, flowers, and plants. 

The stuff you need to know. 
Material: PC + Aluminum alloy USB Flexi pole 21cm long
Lamp size: 3W - 12 cm x 1.5cm wide   /   5W -21cm x 1.5cm wide
Voltage: USB/DC 5V
Watt: 3W /5W  - 30lumens/w 
Full Spectrum: 380-780nm