Brand new, unused item. Size Earbuds: 20.0 mm x 19.1 mm x 19.1 mm (excluding ear tips and wing tips) Charging case: 66.8 mm x 28.6 mm x 39.1 mm Weight Earbuds: 5.7 g (excluding ear tips and wing tips) Charging case: 44.4 g (47.6 g with wireless charging function) Actual size and weight may vary depending on the manufacturing process. Smartphone Compatibility Access to Alexa features is supported on Android 6.0 or later and iOS 12 or later. However, please note that it is not compatible with the smartphones listed in this list, and the Alexa feature will not be available. Data Communication Echo Buds use the paired device's Wi-Fi connection or mobile data communication and the Alexa app for internet connection and other functions. Additional charges may apply depending on your contract with your carrier. Please check with your carrier for details of your contract. Bluetooth Connection Bluetooth 5.0 Hands-Free Profile (HFP) for calls, Advanced Audio Distribution Profile (A2DP) for audio streaming, Audio/Video Remote Control Profile (AVRCP) for media remote control, Serial Port Profile for connection to Android smartphones, and iPod Accessory Protocol for Bluetooth connection to iPhones.