A 70 watt hci tc ceramic metal halide lamp with a g85 base this hci tc lamp is a compact single ended discharge lamp with a high efficiency hci tc lamps maintain stable colour over their lifetime and emit a crisp sparkling light hci tc lamps are frequently used in shops shop windows public buildings and offices hci tcs can also be used outdoors for floodlighting and pedestrian areas this lamp is available in colours 830warm white and 942cool white boxed in 12