1.Full ProtectionThis keychain case has 360 full coverage, effectively preventing water and dust, scratches, wear and cracks, shockproof and drop-proof, with excellent protective performance. Full fit, firm and tight, achieving all-round protection from front to back, left and right2.Signal Not AffectedProtects your keychain in all directions, but does not affect the long-distance connection between your car and your key.3. [High Quality] Zinc alloy is strong, wear-resistant, durable, does not fade, does not block signals, resists oxidation, feels comfortable, and is ultra-light. Zinc alloy shell is hard and strong, with strong impact resistance4. [Compatibility] Applicable to Mercedes-Benz A, B, C, E, G, R, S, MClass, CLA, CLS, GLA, GLC, GLE, GLS, SLC, SL, GLK, GL, SLK, Viano , GT, SLS, ETC.5.Before purchasingPlease check the size and shape of the key shell to determine whether it will fit your original car key. If you have any questions please contact usSpecificationMaterial: zinc alloyWeight: 100 gColor: carbon fiber colorPackage included1* Key protective case 1* Leather key chainCompatible models are suitable for the following Mercedes-Benz smart keys (for reference only):Class A ------ 2013-2018 Class B ------ 2011-2019 Class C ------ 2009-2018 Class E ------ 2009-2016 Class G---- -- 2009-2018 M Class --- --- 2006-2015 R Class ------ 2007-2017 S Class ------ 2010-2017 CLA ----------- --- 2014-2019 CLS - --- ---------- 2008-2017 GL --------------- 2008-2015 GT ------- ------- 2015-2018 GLK - --- ---------- 2008-2015 GLA --------------- 2014-2019 GLC --- -------- 2016-2019 GLE ------ --- -- 2015-2019 GLS --------------- 2016-2018 SL ------ --------- 2010-2017 SLC -------- --- 2016-2018 SLK -------------- 2008-2015 SLS ---- ------- 2011-2014 Viano--------- 2010-2015Note 1. Please compare or check the picture with your key before purchasing