The Bosch Cross-Line Laser Green Beam (Model GLL100-42GL) delivers professional-grade precision and visibility for all your indoor leveling and alignment tasks. Featuring bright green-beam technology, this self-leveling cross-line laser projects up to four times the visibility of standard red lasers—ideal for marking level reference points, plumbing walls, installing shelves or cabinets, and aligning tile or trim. Its rugged, IP65-rated housing stands up to dust and water exposure, while the full rubber overmold protects against drops and impacts on the jobsite.

Power flexibility is built in: use the included rechargeable 3.7 V Li-Ion 3.0 Ah battery or switch to AA batteries (sold separately) when you need a quick swap. The USB-C charging port lets you top up on the go—even while the laser is in use—so you can keep working without interruptions. Built-in VisiMax™ technology continuously monitors power consumption and temperature to maximize line brightness and extend runtime, giving you up to 8 hours of operation on a single Li-Ion charge.

Key Features

• Bright green-beam laser projects lines up to 4× brighter than red-beam models
• Self-leveling Smart Pendulum System locks for transport and indicates out-of-level conditions
• Power flexibility—includes rechargeable 3.7 V Li-Ion 3.0 Ah battery; also accepts AA cells (not included)
• USB-C charging port enables fast charging, even during use
• Jobsite-tough IP65 rating for dust-tight and water-resistant durability
• Built-in VisiMax™ technology optimizes energy use for maximum line visibility and longer battery life
• Outstanding 8-hour operating time (Li-Ion battery) for all-day productivity
• Multiple mounting options: integrated magnets, 1/4″-20 tripod thread or wall bracket