Description: Whats the difference between B02-F-A60 and B02-F-ST64? From the appearance, B02-F-ST64 is amber and B02-F-A60 is cyan. The amber offers 700 lumens with a color temperature from 1800K to 5000K, and the cyan emits a brightness of 800lm and color temperature of 2200K-6500K. Can bring the vintage and modern feeling to your home Adjust the color temperature for warm and cold light Unique smart LED technology ensures the bulb save your electricity bills by 90% Can be scheduled to automatically turn on and off Support voice to turn on/off, adjust the brightness and color temperature Universal E27 base fits for most standard light fittings Specifications: Specification of SONOFF B02-F Smart LED Filament Bulb: Model: B02-F-A60; B02-F-ST64; Input: 220-240V AC 50Hz; Luminous Flux: B02-F-A60:806Lm; B02-F-ST64:700Lm; CCT: B02-F-A60:2200K-6500K; B02-F-ST64:1800K-5000K ; Power Rating: 7W; Lifespan: About 15000h; Package Included: 1*Smart Bulb