ITEM NAME:E9 Open Ear Bone Conduction Headphones IP55 Lightweight for Running Office Description: Open-Ear design bone conduction technology delivers audio through the cheekbone, loudspeaker close to the ear but it is not inside the ear. Help listens to the surroundings at the same time, let you keep safety for biking, running, driving and more portable for business. Easy controls to play, pause, skip, activate voice assistant, and answer calls. Sweatproof and waterproof IP55 Suitable for running sports wearing. Built-in high-performance lithium battery 200mah, 6 hours continuous play, 10 days standby time, 1.5-2hours fast charge. Specification: Model: E9 Waterproof rating: IP55 Bluetooth protocol: A2DPV1.3 AVRCPV16 HFPV17 HIDV11AVCTPV1. 4 AVDTPV13 SPPV12 Sensitivity: 88+/3dB Battery capacity: 200mAh Working voltage: 3.7V Input voltage: DC-5V 50OmA Charging time: 1.5-2 hours Standby time: more than 10 days Play time: more than 6 hours Material: ABS Plastic Size: Approx. 135x93x48mm/5.31x3.66x1.88inch Package Includes: 1x Bone Conduction Headphones 1x Charging Cable 1x User Manual Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement. SKU: 0025876268034766.Sweatproof and waterproof IP55 Suitable for running sports wearing. 1x Bone Conduction Headphones. Battery capacity: 200mAh. 1x User Manual. 1x Charging Cable. Bluetooth protocol: A2DPV1.3 AVRCPV16 HFPV17 HIDV11AVCTPV1.