Your Ant Audio Wave Sports 450 Bluetooth Headphones, Ergonomically made soft flexible neckband and the different sized ear tips and ear hooks, all for your best wearing and using experience. Long lasting batteries inside, 80mAH each side, 160mAH in total. With average use, it can run 10~12 hours for you, which is twice or triple of other fellow Bluetooth headphones. Built with TPU material made chamber to give you powerful bass and smooth medium-high frequency. Would you like to join with me to this wonderful music journey, Engineered with IPX5 waterproof level for better protection during rain and workout, Specification: Bluetooth Version: Bluetooth V5.0, Support Bluetooth Profile: A2DP, AVRCP, HSP, HFP, Bluetooth Working Frequency: 2.402GHz-2.480GHz, Transmission Distance: 33 feet(10m), Charging Voltage: DC 5V, Working Time: Up to 10 hours, Frequency Response: 20Hz-20KHz, Standby Time: Up to 150 hours, Charging Time:1-2 hours, Technical Details: Brand Ant Audio, Model 450, Model Name Wave Sports 450, Item Weight 22 gm Product Dimensions 36 x 2.1 x 2.6 cm, Batteries: 1 Lithium Polymer batteries required. (included), Item model number 450, Additional Features Standby Time: – 150 hours, Talk time: – 10 hours, Battery Types: – Li-Polymer Battery Bluetooth, Profile: – HSP/ HFP/ A2DP and AVRCP, Bluetooth Version: – 5.0.