Specifications:The latest bluetooth-compatible V5.0 provides ultra-fast connectivity. Faster pairing and more stable connection.With charge box, you can charge your earphones anytime and anywhere.HiFi sound effect, brings you excellent music listening experience.A wonderful gift for your good friends or lover.Item Name: bluetooth-compatible EarphonesCase Material: ABSBluetooth Version: V5.0 + EDRBattery Capacity: Earphone: 55mAh; Charge Box: 350mAh (Included)Charging Time: Earphone: 1h; Charge Box: 2hWorking Range: 7-10mBluetooth Profile: HFP, HSP, AVRCP and A2DPSupported Protocol: SBC/AAC/FHSSSensitivity: 120+/-3dBSpeaker Type: Moving CoilSpeaker Resistance: 32Speaker Size: 8mmPlay Time: 3-4 Hours (After Full Charge)Talk Time: 3-4 Hours (After Full Charge)Standby Time: 120 Hours (After Full Charge)Battery Type: Rechargeable Lithium-ion Polymer BatteryFeatures: bluetooth-compatible Connection, Auto Pairing, In-Ear, HiFi, PortableCharge Box Size: 52mm x 52mm x 38mm/2.05" x 2.05" x 1.5" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:2 x bluetooth-compatible Earphones1 x Charge Box1 x Charging Cable1 x User Manual