Product basic info Instruction manual languages: Dutch, English, French, German, Polish, Portuguese, Spanish Primary colours: White Height unit: 390 mm Weight unit: ± 200 g Material: Metal Additional material: ABS Physical properties Cable length: 1 m Number of LEDs: 20 Depth base: 66 mm Width base: 123 mm Arm length: 35 cm Flexible arm: Yes Height base: 53 mm Technical data Mounting type: Clamp mounting Dimmable: Yes Battery capacity: 500 mAh LED type: Ultra-efficient SMD leds Colour temperature range: 3000-6000 °K Luminous flux at 2900k: 140 lm Luminous flux at 4100k: 250 lm Luminous flux at 6000k: 130 lm Colour of LEDs: White Colour of LEDs detailed: Cold white, Warm white Environmental data IP rating: IP20 Usage location: Indoor only Operational properties USB rechargeable: Yes Maximum clamping range: 40 mm Electrical connections Mains plug type: No plug (open end) Power supply Input voltage rating VDC: 5 V Batteries included: Yes Battery required: No Number of batteries: 1 Battery operated: Yes Battery voltage rating: 3.7 V Power consumption: 3 W Input current rating: 1 A Rechargeable battery: Yes Battery composition: Lithium-Polymer (LiPo) Included On / off switch: Yes USB cable: Yes Clamps: Yes (EN)