Bamboo Headphones and Case. The headphones and charging case are made from RCS (Recycled Claim Standard) certified recycled ABS and 100% FSC® bamboo. Total recycled content: 23% based on the total weight of the item. The RCS certification guarantees a fully certified supply chain of the recycled materials. The perfectly fitted headphones have a 40 mAh battery and can be recharged in the 400 mAh charging case in 1 hour. With very easy automatic pairing function to pair with your mobile device. Playback time at medium volume is about 14 hours. With BT 5.3 for an optimal connection. Operating distance of up to 10 meters. With pick up and microphone. Includes 3 sizes of silicone ear pads. Includes RCS certified recycled TPE charging cable. Presented in FSC® mixed kraft packaging. Item and accessories 100% PVC free.