Name: Bluetooth headset on the earBluetooth Version:5.3Wireless support protocol:A2DP AVRCP/HFP/HSP/Operating Distance:10 metresDriver:14mmImpedance:32Sensitivity:1053dB SPL at 1kHzFrequency Response:2020,000HzBattery capacity: 60mAh per headsetCharging Case Capacity:400mahCharging time: 1 hour for headphones, 2 hours for charging caseMusic time:5.5 hoursSupported Functions:Answer/End/Reject/Play/Pause/Previous/Next/Volume Up/DownDescriptionLatest Bluetooth 5.3 TechnologyFeaturing the latest Bluetooth version 5.3, it offers faster connection speeds, more stable signal transmission and lower power consumption. This means longer battery life and fewer audio interruptions, ensuring users enjoy an uninterrupted high-quality music and call experience.Superior audio performanceEquipped with a large 14mm driver, combined with a 32 impedance and sensitivity of 1053dB SPL at up to 1kHz, it delivers clear, rich sound detail. A wide frequency response range of 20Hz to 20,000Hz is supported, allowing users to immerse themselves in every nuance from low bass to high notes.Convenient Operation and Multi-functional ControlsA variety of convenient operations are supported, including answering/ending/rejecting calls, playing/pause music, switching songs and adjusting the volume, all of which can be done with a simple touch or button operation without taking out the mobile phone, making daily use easier and more comfortable for users.Long-lasting battery life and fast chargingEach headset has a built-in 60 mAh battery that allows up to 5.5 hours of continuous music playback on a single charge; with the 400 mAh charging case, the total battery life is significantly extended for a full day's or even days' worth of use. In addition, the headphones can be fully charged in just 1 hour and the charging case in just 2 hours, ensuring that users are always fully charged.Stable and Reliable Wireless ConnectionSupport for wireless protocols such as A2DP, AVRCP, HFP and HSP not only ensures high-quality stereo sound transmission, but also provides support for telephone voice functions. An effective operating distance of over 10 metres allows users to move freely over a wider range without affecting the quality of the audio or the stability of the call.