Supports voice calls and includes the necessary charging cable. Operation has been confirmed to work without issues on both iPhone and Android devices. Specifications: Bluetooth Compatible Version: csr4.1 Support Agreements: a2dp, avrcp, hsp, hfp Lithium Battery Capacity: 55mah Charging Time: 2 hours Color: Black Working Time: Music playback, up to 3 hours; Call status, up to 5 hours Standby Time: Up to 180 hours Operating Range: 10 meters Frequency Response: 20-20KHz Charging Interface: Micro USB Total Length: Approximately 60cm / 23.6 inches Pairing Method: 1. Press and hold the switch button for 3 seconds or more. The blue/red LED will flash, entering pairing mode. 2. Enable Bluetooth on your mobile phone and scan for "music". 3. Click "[Pair]" and select [OK]. Contents: 1 x Bluetooth Earphone 1 x USB Charging Cable *Color is random. Although new, there may be minor scratches and dirt due to being an overseas product. Please refrain from purchasing if you are particular about domestic product quality or are overly sensitive. The design and specifications may differ slightly between the image and the actual product, so please prioritize the actual product images. The information provided is based on information from the manufacturer. Therefore, we cannot guarantee performance. For initial defects, we will resend or cancel the order after the item is returned with the buyer paying for the return shipping. As this is an imported product, there may be minor scratches and dirt. #Yumemibito (Yu) ← Other items are also listed. 2212243