I bought this new and tried it on once. For those looking for something in like-new condition. I'm asking for this price (^-^) Audio-Technica ATH-CKS330XBT Wireless Headphones Audio-Technica ATH-CKS330XBT GR Extra Bass Wireless Bluetooth Headphones [SOLID BASS/Waterproof/Up to 20 hours of continuous playback/Large home appliance product] ATH-CKS330XBT GR Black Marks Audio technology Black Ear Placement In-ear Headphone Model In-ear Impedance 16 ohms Noise Reduction Noise Isolation *This product has acquired the Technical Conformity Mark (Frequency range: 2.4GHz band). It can play continuously for up to 20 hours with a full charge of about 2 hours. *It can play continuously for about 2 hours with a charge of about 10 minutes. * Low latency mode to reduce delay