Features:. 1, 8D surround sound, 5.0 dual-ear chip, large capacity, true wireless Bluetooth headset. 2, Graphene bass diaphragm, HIFI high-frequency technology, 10MM dynamic speaker unit. 3, Two connection methods: single / double free to use, single ear listening to. enjoy alone, listening to HiFi stereo in both ears.. 4, 5.0 automatic boot pairing, built-in active noise reduction IC, HD call.. 5, 5.0 Bluetooth game without delay,. Specifications:. Model Number: TWS-XT01. BT Version: BT5.0. Transmitting Distance: 10m/33ft. BT Protocol: HFP, A2DP, HSP, AVCRP. Frequency Range: 20-20000Hz. Sensitivity: 98dB. Impedance: 16O. Charging Box Capacity: 3.7V 450mAh. Earphone Battery Capacity: 2 * 3.7V 50mAh. Music Play Time: about 4-5 hours (depends on music volume). Charging Time: about 1.5 hours for earphones, 2 hours for charging box. Color: Black. Earphone Item Size: 26.6*21.6*16.4mm/1.04*0.8*0.64in. Earphone Weight: 3.5g/0.14oz (Each Earbuds). Charging Box Size: 62*40*27.2mm/2.44*1.57*1.07in. Charging Box Weight: 70.4g/1.24oz. Package include:. 2x Mini Earphones (Left and Right Ear-buds). 1x Charging box. 1x Type C charging cable. 1x User Manual