Product Name: cheero Wireless Open Earphones Smart Model Number: CHE-645 Colors: Black, Blue, Mint, Pink, White Dimensions (Earphones): Approximately 24 x 15 x 25mm Weight (Earphones): Approximately 3.6g Dimensions (Charging Case): Approximately 67 x 23 x 41mm Weight (Charging Case): Approximately 28g Bluetooth Version: 5.3 Waterproof Rating: IPX5 Supported Profiles: A2DP, AVRCP, HSP, HFP Supported Codecs: SBC, AAC Charging Time: Approximately 1.5 hours (earphones) / Approximately 1.5 hours (charging case) Continuous Playback Time: Approximately 4.5 hours Maximum Communication Distance: Approximately 10m (without obstacles) Input: 5V/1A USB-C Battery Capacity: 28mAh (per earphone) / 320mAh (charging case) Accessories: USB-A to C charging cable, Cleaning cloth, Instruction manual Purchased on May 25th and used for about 3 months.