This unique device, the Geemarc CL7100 connects to an array of devices such as the TV and HI FI to allow you to listen to your favourite programs at the volume you want, without upsetting the person next to you or your neighbours!By having an additional headset paired, two of you can enjoy the rich sounds transmitted by means of infra-red to the headset, each being able to adjust the volume and tone of the headset to their preferences. Each headset weights a mere 60grams (that includes the battery) so you will have high levels of comfort for hours on end using this headset. The balance in the headset has been set so sound comes to the headset equally, however there is an adjuster to adjust this balance if need be.The arms on the headset are designed to be very flexible, allowing the wearer ample space to open the arms to fit into one?s ears.The base unit can accommodate two headsets; the second headset is an optional extra that can be purchased separately. This base unit does the charging of the headsets as well as the transmission of the infra- red signal to the headsets while in use. A full charge of the headset will be about 3 hours. Battery life is good, allowing you about 10 hours listening time before the headset needs to be recharged. Being infra-red, the headset does need to be in line of sight of the base unit for it to work correctly.