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Quality note

The glass is handmade and may show slight inclusions 
and irregularities due to production. 

Care and user instructions

Clean the metal base with a dry microfibre cloth. 
Do not use any cleaning agents containing solvents or 
chlorine.
The glass can be cleaned with glass cleaning agents.

Technical data

5V 2W, 200lm, 1800 – 2700 K, CRI > 90, 
charging  adapter:  100 – 240V  50  – 60Hz.,  secondary 
5VDC, max. 2000mA Connection: USB-C, battery: 
5200 mAh. The luminaire contains LED lamps of 
energy class A+.

LED module, battery and glass are available as spare 
parts from Ingo Maurer GmbH. Repairs must be 
carried out by a qualified electrician. 

In case of damage caused by non-compliance with 
these operating instructions, improper commissioning 
and/or structural changes, e.g. by third-party compo-
nents, handling or intervention by third parties, the 
warranty claim is void.

Carefully remove the luminaire and accessories from the packa-
ging. The supplied fabric bag is used to store the luminaire and 
protects from scratching. 
Attention: b.bulb is not suitable for outdoor use. The product is 
not a toy. Exercise particular caution in the presence of children! 
b.bulb must not be operated with unscrewed glass.

Use

The luminaire is controlled via the switch on the bottom of the 
metal base (

1

). 

Pressing briefly switches the luminaire on and off. When held 
down for a longer period, the luminaire dims, changing to a war-
mer light colour as brightness decreases. (2700K – 1800K).
The last selected setting is saved when the unit is switched off 
until the next use. If you keep the switch pressed in the off state, 
b.bulb dims from 0 to 100 %. up. A short flashing indicates full 
brightness. 

Function of the battery status display

 

As soon as you move b.bulb, a coloured LED lights up in the 
switch, indicating the charge status of the battery (

1

). This  lights 

up for 10 seconds in both the on and off state. The colour code of 
the LED indicates the remaining battery power. 
In battery mode (

4

): 

Green, over 50 %, orange over 25 % and red under 25 %.When 
the battery power is 10% or more, the lamp automatically dims 
by 30 % to extend the battery life. However, it can be dimmed up 
again as described above. 
During charging (

3

): 

Green (flashing), above 90 %; orange, above 25 %; red, below 25 %.

To charge, insert the USB-C plug (

2

) into the recess on the metal 

base and connect the cable to the charging adapter. The lamp 
signals the start of the charging process by flashing briefly.

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