Much more than just a portable wireless speaker.Eco Speak is much more than just a wireless portable speaker. It not only plays up to 4 hours of music wherever and whenever you want, but it's also made of wood and it's more respectful with the environment...Made of wood.The Eco Speak wireless speaker is 50% wood, a natural and biodegradable material...Up to 4 hours of music.With its 400 mAh battery, Eco Speak plays up to 4 hours of music. Thanks to its portable size and the included strap, you will be able to enjoy your favorite music whenever and wherever you want... True Wireless Stereo function.With the True Wireless Stereo mode you will be able to connect a second Eco Speak to create a stereo ecosystem made up of two channels: left and right. Enjoy your music with twice the power...Plastic-free packaging.The packaging that contains the Eco Speak is recyclable and 100% plastic-free...We collaborate with Bosquia.Forests are the biggest weather regulators and balancers: they boost rains, generate oxygen, clean the atmosphere and are essential for life. Because we understand how important trees are to our planet, we collaborate with Bosquia in the creation of a forest made up by 80 native trees in Huelva, Spain... Main features .50% made of wood.Up to 4 hours of music.True Wireless Stereo function. Recyclable and plastic-free packaging...Technical specifications.Power: 3.5W.Connectivity Bluetooth 4.2.Bluetooth profiles: A2DP, AVRCP, HFP.Driver: 40 mm.Operation range: 10 m.Frequency response: 50Hz-18KHz.Impedance: 4O.Battery capacity: 400 mAh.Playtime: 4 hours.Battery charging time: 1.5 hours.Micro USB-USB cable included.Size: 74 x 74 x 34 mm.Weight: 116 g...Compatibility. Smartphones, video game consoles and other devices with Bluetooth 4.2 and higher .