The products’ data sheets of the following comparable headphone models were considered: Jabra Evolve 65 (GN Audio A/S 2020c), Jabra Elite 85 h (GN Audio A/S 2019), Poly Voyager 4200 Office & UC (Plantronics Inc. For this purpose, all available information of the products’ data sheets covering type of headphone, weight, components, materials, battery, microphones, and speakers were compiled. In order to provide some benchmark information and to verify the Jabra Evolve2 85 as a representative product, a comparison was conducted. The product data sheet of the Jabra Evolve2 85 (GN Audio A/S 2020b) and ten additional data sheets of selected current cordless on-ear and over-ear headphone models were identified in an online search. To achieve this goal, dismantling trials were conducted, followed by a life cycle assessment including a sensitivity analysis with a repair scenario. The goal of this work was to identify the components and materials of this particular headphone model, the Jabra Evolve2 85 (28599-989-999), and to assess its climate impact measured as contribution to the global warming potential. In this context, Pforzheim University students analyzed the environmental impact of one Jabra headphone model in cooperation with these two companies. In 2020, the trade-in-system “Jabra Green Initiative – Recycle and Benefit” started in collaboration with the German company TechProtect GmbH (GN Audio A/S n.d.a), a company that offers marketing integrated services and take back solutions. Their sustainability targets include goals referring to the sustainability of their products, packaging, manufacturing, and distribution (GN Audio A/S 2020a). GN Store Nord A/S is an international company based in Denmark which provides hearing, audio, and collaboration solutions under the brand name “Jabra”. The usage of headphones is increasing: In 2020, around 15.5 million headphones were sold in Germany, an increase of 6.8% compared to 2019 (gfu Consumer & Home Electronics GmbH and Growth from Knowledge 2020). They facilitate peoples’ lives as they, for example, allow having calls or listening to music anywhere at any time without disturbing the environment. Headphones are electronic devices worn on the head to transmit sound to human ears both in the business world and for private usage. Assuming a doubled lifetime, the global warming potential per hour is reduced from 4.7 g CO 2-Eq/h to 2.4 g CO 2-Eq/h. In the context of a sensitivity analysis, a repair scenario of a battery replacement of the over-ear headset is modelled. The lifecycle assessment results in a global warming potential of 12.17 kg CO 2-Eq with a contribution of the manufacturing phase of 81.2%, based on an assumed lifetime of 2,600 using hours. The functional unit is defined as the wireless audio transmission through a stereo headphone over its lifetime. The materials can be categorized into polymers (61.7%), metals (20.9%), circuit boards (4.8%), Li-ion battery (4.6%), foam (3.5%), cables (3.0%) and unidentifiable polymers (1.7%). The total weight of all components is 280.7 g. After 30 days we offer new batteries for an additional charge.Based on disassembly studies, a life cycle assessment of the climate impact of the wireless over-ear headphone model Jabra Evolve2 85 (without charging station) is conducted regarding the life cycle phases of manufacturing, packaging, distribution, use and disposal. DECT utilizes a different spectrum that minimizes the effects of interference from signals such as Wi-Fi.ĭisclaimer: Please note, batteries for Plantronics wireless headsets are warrantied for 30 days. The Plantronics makes use of DECT wireless technology. The Savi 740 can be worn on the ear, over the head with an optional headband, or behind the neck with an optional neckband. Combined with the option of three different wear styles, the Savi 740 is a comfortable option for those who frequently need to move about the office. The Savi W740 offers a talk range of up to 350 feet from the base. All of this connectivity comes in a compact wireless headset package that boasts numerous features. Now users can use a single headset system to connect to a PC, mobile phone, and desk phone. With the Savi 740, you're no longer tied down to a headset for just a desk phone or cellphone. The Plantronics Savi 740 Wireless Headset (83542-01) is a unique, multi-connectivity headset. Product Description Plantronics Savi 740 Wireless Headset (83542-01)
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