1. These compact fluorescent bulbs can only effectively use 27W of energy while producing 1500 lumens of visible light.
2. The 27W fluorescent lamp produces 6500K daylight quality light， which can reduce eye fatigue and improve concentration time. It is ideal for small tasks that require a long time of concentration， because it keeps you alert， which is different from the neutral color temperature that is more suitable for general lighting.
3. A four-tube bulb equipped with a 4-pin Gx10Q-4 base has an average service life of up to 10，000 hours. Compared with the traditional incandescent bulb， the energy required is reduced by 75%， which is longer than the equivalent incandescent bulb.
4. Its size is about 148 * 7.6 * 8.5cm. The effect is better under 220V power supply. (Need to be used with a ballast) It is environmentally friendly， does not contain lead or mercury， and does not contain ultraviolet or infrared radiation.
5. Replacement bulbs for compatible desk lamps， floor lamps， and special and antique lighting equipment with 4-pin sockets; important note: please confirm the markings and measure the bulbs to be replaced to ensure fit and compatibility.