ItemTWS Smart Noise Reduction Earphone with Charging Case Model锛?/p>TWS-X17 StyleIn-ear CommunicationWireless UseMobile Phone, Gaming, Sports, Travel, For iPod, HiFi Headphone Functionblue tooth, Waterproof, Noise Cancelling, Microphone Place of OriginChina Blue tooth StandardHSP/ HFP / A2DP /AVRCP Waterproof StandardIPX-5 Keywordtelephone earphone Working frequency:2.40GHZ~2.48GHZ Talking time7hours Music playing time8 hours Blue tooth transmission distance10 m Speaker output power3mW Receiving sensitivity-90db Battery capacity3.7V /110mAh with protection IC Charging time1.5 hours Charging interfaceMicro-USB Packaging & Delivery Selling Units:Single item Single package size: 13X9X4.2 cm Single gross weight:0.100 kgTWS Bluetooth Headset suppliers website:http://www.zlinck.com/bluetooth-earphone/tws-bluetooth-headset/