In-Ear Bluetooth headphones. A high-resolution Bluetooth chip with AAC transmission is optimized for your iOS device by providing better sounding wireless audio at similar bit rates. Enjoy higher resolution and a higher decoding rate with less storage. Two balanced armatures and a separate dynamic driver deliver an extremely accurate listening experience with unsurpassed dynamic power. HI-RES LDAC BLUETOOTH CODEC- LDAC transmission technology provides a meticulous sounding wireless listening experience that does not affect sound quality. LDAC enables 990 kbps of transmission speed which is 3 times higher than ordinary Bluetooth. Experience longer battery life with 7 hours of talk or music play, with just 1 hour of full charging. Fast Charge enables 2 hours of use with only 10 minutes of charge time so you never skip a beat. ENC technology (ENVIRONMENTAL NOISE CANCELLATION TECHNOLOGY) has a precise microphone array that efficiently filters out background noises, meaning communication remains crystal clear no matter which environment you are in. Specifications: Charging Time: 1 hour, Talk TIme: 7 hours, Music Play Time: 7 hours, Impedance: 32 Ohm, Wireless Range: 35 ft, Bluetooth: Bluetooth V 4.2, Bluetooth Protocol: HFP/A2DP/AVRCP, Weight: 42,5 g, Inpout: 5V1A