• Model: Lenovo HD300 • Microphone: Yes • Color: Black • Ergonomic design • Foldable and adjustable design, soft ear pad. • The HD300 earphones support music playback via BT connection, TF card and 3.5mm audio cable. • The 300mAh rechargeable lithium battery provides about 11 hours of music playback and has a long standby time of about 150 hours standby. • The built-in microphone enables hands-free talking while exercising and delivers clear and real conversation sound. • Headphone Type: Wireless Bluetooth Headphones • Materials: Plastic+Aluminum+PU leather • Speaker size: 40mm • Connection: mini-Jack (3.5 mm), Bluetooth v 5.0 • Headphone battery capacity: 300mAh • Headphone frequency range: 20 - 20000 Hz • Resistance: 32 ohm • Headphone sensitivity: 108 dB