1The metal aluminum substrate is used， which has good heat dissipation effect and is not easy to be damaged or deformed. 2Low power consumption， high brightness， suitable for night lighting， energy saving and environmental protection. 3Commonly used in DIY ceiling lamps， downlights， spotlights， flashlights， stage lights， table lamps and other lamps. 4Easy installation and disassembly， wide application， can be directly welded on various DIY lighting fixtures. 5The light is uniform and soft， the luminous flux is 90lm/W， good lighting effect， and it can be used for a long time.Item Type: LED ChipMaterial: Aluminum + Lamp ChipsWeight: Approx. 17g / 0.6ozDiameter: Approx. 20mm / 0.8inConnection Voltage: 3VLuminous Flux: 90lm/WService Life: 10000H10 x LED Chip1. Please allow 0&8209;1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same， item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.