Promate FreePods-2 In-Ear True Wireless Earbuds with Intelligent Touch and a 25-Hour Playback Time Controls: Technical Details: Version 5.0 of Bluetooth Profile on Bluetooth: HFP/HSP/A2DP/AVRCP Chipset for Bluetooth: JL6976DEarphone 5V, 30mA input Input for the charging case: 5V, 350m 2.4GHz to 2.48GHz frequency range, 32Ω impedance, and two hours of charging time Playtime: Five Hours Duration of Standby: