Product Features Bluetooth version 4.1 IPX6 waterproof level (with nano coating waterproof technology) NFC apt-X streaming high quality music Multi-point connection – connects to 2 Bluetooth devices simultaneously Product Specifications Bluetooth Version: 4.1 Multi-point Technology Talk time: 8 hrs. (Max.) Music playtime: 6 hrs. (Max.) Standby time: 100 hrs (Max.) Charging time: 120 minutes Operation range: 10 meters (Open space) Battery type: Li-Polymer Support profiles: HFP, HSP, A2DP, AVRCP Radio frequency: 2.4GHz-2.4835 GHz ISM band. Ingress Protection: IPX6 Dimensions: 440 × 48× 28 mm Weight: 34 g