The WS-20 can be fixed to a wall. The lamp is very compact so it can be used anywhere. Its long lifespan is another plus point.
The SMD LEDs are soldered directly to the electronic component using a special technique. The SMD LED is very robust and has an even longer lifespan than standard LEDs. SMD LEDs are available in many shapes and sizes. They have no lens, which makes the light angle much larger.