The tube audio is the tube clock´s companion; a portable bluetooth speaker with the best components available resulting in an extraordinarily good sound given its size, and has a music playtime of at least 12 hours! MATERIALS: Matt black coated steel COLOUR: Matt Black DIMENSIONS: Ø 5cml: 8cm / Ø2"l: 3.1" PLAY TIME BATTERY: 12 Hours CONNECTIONS: Bluetooth, AUX BLUETOOTH VERSION: 4.0 (and lower) BLUETOOTH RANGE: 7 Meters PORT CAPACITY SPEAKER: 3W MAXIMUM VOLUME: 100dB BATTERY TYPE: Lithium-polymer-battery WARRANTY: 2 Years BLUETOOTH PROFILES: A2DP, AVRCP, GAVDP, IPOT SIGNAL TO NOISE RATIO: >80dB WEIGHT: 230g / 0.5lbs DESIGNER: Piet Hein Eek YEAR OF RELEASE: 2014 CONTENTS PACKAGING: Tube bluetooth speaker, USB cable, instruction manual