Color: Black 【High-Fidelity High-Quality Sound】 With support for high resolution and standard codecs, this product transmits musical information in detail without losing any nuances, from the sound of each instrument to the breath of the singer, and even the excitement of a live performance. 【Excellent Compatibility】 Compatible with various Bluetooth-enabled devices such as iPhones, iWatches, Android smartphones, iPads, tablets, iPods, and PCs. ■ Case Size: 58 x 40 x 26 (mm) ■ Communication Method: Bluetooth 5.3 ■ Communication Distance: 10m ■ Profiles: A2DP/AVRCP/HFP/HSP ■ Single Earphone Weight: Approximately 3g ■ Case Weight: Approximately 27g ■ Continuous Playback Time: Approximately 2 hours ■ Earphone Charging Time: Approximately 1 hour ■ Charging Case Charging Time: Approximately 1.5 hours ■ Charging Case Battery Capacity: 300mAh ■ Charging Voltage: 3.7V