Up to 42 hours of music playtime and up to 48 hours of talk time depending on volume. 320 hours on standby. 10-20,000 HZ frequency response. 150 mW Max Input Power. 40mm Driver Diameter. Lithium Polymer Rechargeable Battery. 103 dB+/-3 dB Sensitivity. For Apple iPhone's / iPad's / Android devices / Smartphone devices w/Bluetooth connectivity. Integrally Molded into one piece.