2.1 x 0.7 mm SMD chip LED lamp. High efficiency red (peak wavelength 627 nm). Lens type water clear. 2.1 x 0.7 mm SMD chip LED lamp. Super bright green (peak wavelength 565 nm). Lens type water clear. 2.1 x 0.7 mm SMD chip LED lamp. Yellow (peak wavelength 590 nm). Lens type water clear.