[TWS & BLUETOOTH 5.0] - Adopt the most advanced Bluetooth 5.0 technology. Support HSP, HFP, A2DP, AVRCP. Provides in-call stereo sound. [Hi-Fi Stereo Sound Quality] - The Bluetooth Earbuds Offers a Truly Natural, Authentic and Powerful Bass Performance. [ONE STEP PAIRING] - Pick up 2 Eerphones from Charging Box They will Connect Each Other Automatically, then Only one step easily enter mobile phone bluetooth setting to pair the earbuds. [IPX7 WATERPROOF] - High-level water-resistant makes it possible to immerse in water of 1 meters deep for 30 minutes. Ideal for sweating it out at the gym or singing in the rain. [CHARGE ON-THE-GO] - The wireless earbuds can last for over 6 hours¡¯ playtime from a single charge and 30 extra hours in the compact charging case. Specification: Bluetooth version: Bluetooth V5.0 + ER/BDR Bluetooth Profiles Supported: HFP 1.7, HSP 1.2, A2DP 1.3, AVRCP 1.6 Bluetooth Connect Distant: 10m/33ft Sensitivity: 85dBm Impedance: 16? Frequency: 20 - 20KHz Talking Time: 5.5 hours Music Playing Time: 6 hours Charging Time of Headset: About 1 hours Charging Time of Battery Carrying Case: About 1.5 hours Charging Headset Times from Battery Carrying Case: 6 times Battery Carrying Case Supply Power for Headset Music Play Time: About 36 hours Earphone total standby time: More than 2800 hours Battery capacity of earbuds: 45mAh Battery capacity of charging case: 900mAh Mobile Power Input Voltage: 5V Transmission frequency: 2400-2483.5MHZ Weight(one earbud): 4.5g Size(one earbud):25 x 20 x 15mm Weight(whole earphones):68g Size(whole earphones):105 x 27 x 21mm Package Weight: 163g Package Size: 140 x 100 x 31mm Package Included: 2 x Earbuds 1 x Charging Case 1 x USB Cable 1 x Instructions 3 x Silicone Ear Tips