Features:* BT 5.0 technology, features one-step pairing, stable signal and effective connection with 15m barrier-free transmission distance.* Using CVC 6.0 digital noise reduction technology, it can intelligently eliminate external noise for a clearer sound quality.* Easily answer / hang up / reject a call and adjust volume by clicking the buttons, simple and quick to operate.* 180° rotatable head allows you to switch wearing between left ear and right ear, flexible and convenient.* Ergonomic clip-ear design with soft silicone earplug, brings lightweight, comfortable and stable wear during driving or exercise.* IPX7 waterproof level easily deals with daily water splashing. Support battery display on the phone (ONLY compatible with iOS system).* Widely compatible with mobile phone, tablet, laptop, smartwatch, music player and other devices with BT 5.0 or lower version.Specifications:Model: S109Material: ABSColor: BlackBT Version: 5.0Battery Capacity: 120mAh / 3.7VTransmission Distance: 15m (no barrier)Charging Time: 1.5HCall Time: 8-10HStandby Time: 180HWaterproof: IPX7Item Weight: 11g / 0.39ozPackage Size: 15.6 * 8.5 * 2cm / 6.14 * 3.35 * 0.79inPackage Weight: 19g / 0.67ozNote:* Please read the user manual carefully before using this product.* There may be 1-3 errors due to manual measurement.Package List:1 * BT Headset1 * Charging Cable1 * User Manual (Chinese, English)