Bluetooth 5.0, bringing high-speed transmission, 10m stable connection Smart touch technology, no pressure touch, simple and free Built-in microphone, support hands-free phone conversation Adopting professional audio decoding technology, decreases loss in the sound transmission process and creates more immersive stereo sound effect Come with 190mAh charging case, charge your earphone anytime anywhere Ergonomic design, comfortable and steady Stable signal, anti-interference Specification: Brand: Joyroom Model: JR-SP1 Bluetooth version: 5.0 Sensitivity: 107dB Support agreement: HSP/HFP/A2DP/AVRCP Frequency response: 20Hz-20KHz Battery capacity: 190mAh (charging case); 45mAh (headphone) Life time: about 3.5 hours Charging case USB control: about 3.5 hours Headphone button control: touch control Charging case size: 30 x 21 x 53.5mm Compatible with: iPhone iPad Samsung HTC Huawei etc. smartphones and tablets Other Bluetooth-enabled devic