Vocalism Principle:Other Volume Control:Yes Control Button:Yes Private Mold:Yes Brand Name:OF or OEM Model Number:OFX8 tws bluetooths watch Style:In-ear Communication:Portable Media Player, Mobile Phone, Aviation, COMPUTER, Dj, Gaming, Sports, Audiophile, Travel, PROFESSIONAL, HEARING AID, For Internet Bar, For iPod, HiFi Function:Waterproof, Noise Cancelling, Microphone Place of Origin:Guangdong, China Cord Length:0 Waterproof Standard:IPX-4 Active Noise-Cancellation:No Bluetooth Standard:Bluetooth v5.0 Product name:2-in-1 Portable Bracelet Headset Bluetooth Version:V5.0 Battery capacity:50MAH, charging station 300mAh Working.syi