With noise reduction technology, the earphone has stereo and heavy bass sound effect. It is comfortable to wear the earphone with ergonomic design. Bluetooth-compatible 5.3 version is used for this wireless headset, allowing 10 meters long distance transmission and featuring such as lossless sound quality, HiFi sound, low latency, and call noise reduction. It is constructed of ABS material. The length of this product is 6cm, the width is 4cm and the height is 3cm. It is suitable for travel, office, outdoor, school and so on. Item Name: Earphones Material: ABS Features: Stable Signal, Noise Cancelling, Low Latency Transmission Range: 10 Meters Bluetooth-compatible Protocol: 5.3 Usage: Earplug Type Single Or Double Ear: Bilateral Stereo Charging Compartment Capacity: 400mAh(Included) Headphone Capacity: 30mAh(Included) Battery Life: 4-8 Hours (Hours) Waterproof Performance: IPX4 Headphone Type: In-ear Noise Reduction: Intelligent Noise Reduction Playback Control: Yes Size Details: L: 6cm/2.36", W: 4cm/1.57", H: 3cm/1.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Charging Case 2 x Earphones