Equipped with Bluetooth-compatible V5.1 chip and IPX7 waterproof and sweatproof design, this headset has the advantages of stable performance, high transmission speed, low power consumption, and strong compatibility. This headset uses lossless digital noise reduction technology to provide you with lossless stereo, and the binaural separation design allows you to switch between single and binaural freely and allows single ear to be used alone. Made of high-quality ABS, it is durable and safe to use. The length of the product is 11cm, the width is 6cm, and the height is 3.5cm. Suitable for home, car, school, shopping, traveling. Item Name: Bluetooth-compatible Earphones Material: ABS Earphone Charging Time: 2 Hours Noise Reduction Version: CVC8.0 Communication: HFP 1.7 / HSP1.2 / A2DP 1 / AVRCP 1.6 / SPP1.2 / PBAP1.0 Earphone Battery Capacity: 50mAh (Included) Charging Compartment Battery Capacity: 2000mAh (Included) Talk Time: 4-5 Hours Bluetooth-compatible Version: 5.1 Transmission Distance: 10m Frequency Range: 2402MHz-2480MHz Input Current: 5V Waterproof Grade: IPX7 Playback Time: 4-5 Hours Input Voltage: 5V Size Details: 11cm x 6cm x 3.5cm/4.33" x 2.36" x 1.38" (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 Pair of Bluetooth-compatible Earphones 1 x Charging Cable 1 x User Manual 1 x Charging Case