Ultra Open Earbuds feature a brilliant combination of innovative open-ear design, incredible audio, and all-day comfort. With a cuff-like fit, Ultra Open Earbuds leave your ears open to hear the world around you while OpenAudio technology delivers rich, private sound. Headphone Fit Open Ear Microphones Built-in Microphone Noise Cancelling No Water Resistant IPX4 Case Charging, Protection Bud Single 0.73" H x 0.67" W x 1.07" D (0.0140 lb) Case 1.65" H x 2.56" W x 1.04" D (0.0966 lb) Product Material Plastic (PC-ABS), Metal, Silicone, Gold Plating Product Case Material Plastic (Hard) Rechargeable Yes Battery Life 7 hours Battery Charge Time 1 hour Charging Accessory included Yes Charging Interface(s) USB C PORT Wireless Connectivity A2DP Bluetooth Audio Streaming, Bluetooth, Bluetooth Low Energy, HFP Bluetooth, Wireless Connectivity, AAC Bluetooth, SBC Bluetooth Bluetooth Version 5.3 Bluetooth Range 30 feet Bose App Bose App