The Mantis BS1 B has a variety of purposes thanks to its many available positions. When studying or reading the Mantis' lamp shade can be point directly towards a surface. Conversely, create ambience or accentuate an interior by pointing the lamp shade indirectly towards a wall or feature. The E14 (11 Watt) Energy Saving Light LED bulb produces approximately 620 lumens, which is more than enough for reading. To avoid eyestrain whilst reading and carrying out tasks opt for lamps with at least 475 lumens.