Come and see our amazing products. Invest in a good look for your brand with these Bluetooth earbuds. The 23.6" x 0.67" x 0.59" earbuds fit securely behind users' ears and rest comfortably in the ear canal. The Bluetooth with EDR technology provides seamless syncing to recipients' favorite wireless devices. They can deliver up to four hours of play time on a full charge, making them great for gym time, running, jogging, hiking, cycling and impact sports alike. The earbuds support hands-free calling and listening with a standby time of 150 hours. They are CE, RoHs and FCC certified. Impedence: 32amp, Sensitivity: 108dB to 111dB, Frequency Response: 20Hz to 20KHz, Rated Power: 2.5mW, Max Power: 5mW, Battery capacity: 55mAh. Pls confirm further with us if any query about packing info, inventory status and time schedule.