Supported codecs: SBC, AAC<br> Pairing communication mode: Bluetooth standard Ver5.0<br> Pairing communication distance: up to about 10m (level 2)<br> Battery: lithium ion battery (charging bin: 270mAh, single earphone: 30mAh)<br> Endurance: Single earphone about 6 hours, charging bin about 16 hours<br> Charging time: about 1 hour headset, charging bin about 2 hours<br> Waterproof performance: Headset IPX4 grade waterproof, charging compartment is not waterproof<br> Weight: single headset about 4.5g<br> Product size: earphone: about 23 23 20mm) charging bin: about 60 28 43mm<br> Specifications:<br> Couple Heart-shaped Bluetooth Headset<br> Unique shape, unique ingenuity<br> Immersive Music Experience, New Design<br> HD Call, Open Cover Seconds Link<br> 3D stereo surround sound effect, intelligent noise reduction call<br> Package Included:<br> 1 * earphone, 1 * charging bin, 1 * data cable, 1 * product manual, 4 * ear cap