JBL Tune 510BT headphones allow you to enjoy powerful JBL Pure Bass sound without cables. These easy-to-use headphones provide up to 40 hours of pure enjoyment, with an additional 2 hours of battery life with just 5 minutes of charging with a USB-C cable. If you receive a call while watching a video on another device, the JBL Tune 510BT automatically switches to yourш mobile phone. Bluetooth 5.0 technology enables wireless streaming of high-quality sound from your smartphone without unnecessary cables. Main features: - JBL Pure Bass Sound: The renowned JBL Pure Bass sound that can be heard in the most famous places ш around the world. - Wireless Bluetooth 5.0 streaming: High-quality wireless audio streaming from your smartphone without tangled cables. - Up to 40 hours of battery life and fast charging (5 minutes = 2 hours): Listen without wires for up to 40 hours and recharge the battery in just 2 hours with a practical Type-C USB cable. A quick 5-minute charge provides an additional 2 hours of music. - Bluetooth 5.0 technology: Connect to Siri or Google Assistant without using a mobile device. - Foldable design: Available in multiple colors and foldable for easy wearing. Specifications: - Bluetooth version: 5.0 - Driver size: 32 mm - Maximum music playback time: 40 hours - Driver sensitivity at 1 kHz/1mW: 103.5 dB - Dynamic frequency range: 20 Hz – 20 kHz - Impedance: 32 ohms - Weight: 160 g - Bluetooth profiles: A2DP v1.3, AVRCP v1.6, HFP v1.7 - Bluetooth frequency: 2.4 GHz – 2.4835 GHz - Bluetooth modulation: GFSK, π/4DQPSK, 8DPSK - Bluetooth transmitter power: - Battery type: 3.7V / 450 mAh - Charging time (from empty state): 2 hours