Features:Designed To Thrill You:- Panasonic´s new RB-HX220B wireless headphones are designed for comfort with an ergonomic fit and ultra-lightweight design. XBS technology energizes songs with powerful bass. A 23-hour battery life ensures music played wirelessly via Bluetooth lasts. The folding design is simply practical.- Ergonomic Fit- Up To 23 Hours Of Playback- Extra Bass- Ultralight- Easy And Fast Connection- Foldable DesignComfortable fit:- The padded headband and earcups add comfort to the HX220B device. While your ears are encased in comfortable padding, you´ll forget about the world around you so you can enjoy your music without disturbing those around you.Boost your sound:- Thanks to our XBS technology and the larger drivers found in over-ear models—in this case, 40mm—the HX220B headphones deliver clear sound with extra bass. The power and rhythm they add to your music will have you stomping your feet in no time.Fast and secure connection:- They are a thing of the past thanks to Bluetooth technology. You can easily and quickly connect to your mobile phone. The latest Bluetooth 5.0 wireless technology ensures a stable connection and crystal clear clarity when listening to music and making calls.Folding style:- Thanks to its articulated design, the HX220B headphones fold neatly to fit in a bag or pocket. Wherever you travel, they will always be by your side (if you don´t have them on your head).Ultralight:- Weighing just 180 grams, you´ll hardly notice the HX220B headphones on your head or in your pocket. A portable headset should be truly portable for all your travels.Color selection:- The most difficult decision you will have to make regarding the HX220B headphones will be having to choose between the colors silver and black. Thanks to the competitive price of this model, you can even keep both!Specifications:- Power: DC 5 V 1.65 W (internal rechargeable battery: 3.7 V [430 mAh lithium polymer])- Usage time: ~23 Hours- Charging time: Approx. 2.5 hours- Temperature range during charging: 10 °C to 35 °C- Temperature range during operation: 0 °C to 50 °C- Operating Humidity Range: 35% to 80% relative humidity (non-condensing)- Weight: 180g- Frequency range: 2402 MHz to 2480 MHz- Supported profiles: A2DP, AVRCP and HFP