10-Pack MR16 4W LED Bulb JACKYLED Warm White 3000K 4W = 40W Equivalent Ultra Bright 60 Degree Beam Angle Recessed Track Light 360 Lumens Standard MR16 Spot Lights & Lamp <span class="a-text-bold">4W = 40W Equivalent &amp; Aluminum Reflector.</span>Our 10-Pack Mr16 warm white LED bulb is 360Lumens, 4W = 40W Equivalent. 4W LED Bulb is made of aluminum reflector material. Eye protection with soft but bright light 60 Degree Wide Beam Angle, No IR or UV Radiation, ease to use. Please note: if your working voltages is 100-240V, a transformer for 12V is needed.