Packed into the lid of this Systainer SYS M 137 is a sound system with four high performance speakers and resonance chamber to deliver clear and voluminous sound. For superior audio, connect two TopRock speakers to your smartphone for stereo sound that fills the room.

Bluetooth connectivity with TWS

One, or two TopRock speakers can be connected to a Bluetooth device. If two are connected, they provide stereo sound with one serving as the left speaker and one as the right.

Intuitive controls

The illuminated buttons are built right into the Systainer lid, and control power, volume level, and Bluetooth connection.

Integrated battery

Enjoy audio for up to 10 hours at medium volume with the internal battery, which is charged with the supplied power cable.

Power bank function

The USB interface allows you to charge your devices.

Storage inside

Although the lid is built to produce sound, the Systainer itself remains empty for storage of tools or other accessories. The audio components are protected from the contents below.

Specifications

• 4x 20 watt speakers
• Bluetooth 5.0
• 50 metre (164 foot) maximum Bluetooth range
• 5 volt/1 amp USB output
• 11 volt internal battery
• 4.8 millimetre 19V/1.2 amp DC power adapter
• 396 x 296 x 137 millimetres (15-7/16 x 11-5/8 x 5-5/16 inches)
• 2.8 kilograms (6.17 pounds)