Headphones & Earphones
Sennheiser RS 5200
Sennheiser RS 5200, In-ear wireless headphones, Rechargeable wireless headphones, Extra-light earpiece with optimised on-ear pressure for improved wearing comfort, Three different listening profiles can be set, Balance control for independent volume...
https://www.bizrate.co.uk/headphones_earphones/sennheiser-rs-5200-oid17619782866.html