The Bosch GPB 18V-1 C is an 18V cordless Bluetooth job site speaker designed to deliver clear, reliable sound throughout your working day. Powered by the Bosch Professional 18V battery system, this compact speaker integrates seamlessly with an existing 18V tool kit — no separate mains connection required. It also supports the multi-brand AMPShare battery alliance, offering compatibility across a range of 18V platforms. Alternatively, the speaker can be powered directly via USB-C with power delivery (PD), giving you flexible options on site. The Multi-Speaker Sound feature allows you to connect and share music streams across multiple compatible devices via Bluetooth, ideal for larger work areas or when several tradespeople are on site. Bluetooth 5.4 technology ensures a stable wireless connection, and setup is straightforward out of the box. A built-in USB-C charging port lets you top up your smartphone or other devices while you work. The compact dimensions and carrying strap make this speaker easy to move between locations — whether you're on a building site, in a workshop, or working on a fit-out. Features and Benefits: • Compatible with Bosch Professional 18V System and AMPShare multi-brand battery alliance • Multi-Speaker Sound connects multiple compatible devices via Bluetooth for wider coverage • Bluetooth 5.4 technology for a stable, reliable wireless connection • USB-C charging port for powering smartphones and other devices on site • Can also be powered via USB-C power supply with power delivery (PD) • Compact design with carrying strap for easy transport and storage Specifications: Length: 122mm Width: 97mm Height: 162mm Weight (without battery): 0.7kg Battery voltage: 18V Bluetooth version: 5.4 Contents: GPB 18V-1 C Cordless Bluetooth speaker (bare tool) No battery No charger No case