Item Type: Bluetooth Neckband Headphones Material: ABS Bluetooth Solution: V5.0 Bluetooth Effective Distance: Approx. 10-15m / 32.8-49.2ft Without Obstacles Speaker Size: Approx. 10mm/0.4in Maximum Power: 10mW Sensitivity: 98dB+3dB Frequency Response: 20KHz-20KHz Battery Type: Lithium Battery Battery Model: 401430 Built In Battery: 130mAh Playback Time: About 8 Hours Rated Input: 5V-=500mA Package List 1 x Bluetooth Neckband Headphone 2 x Ear Cap 1 x Charging Cable Please allow some error due to manual measurement. 1MAGNETIC DESIGN: Neckband sport earphone is designed with magnetic suction, gently sucking to prevent slipping and losing, refusing to tangle the wire. 2INTELLIGENT NOISE REDUCTION: Bluetooth neckband headphones support ENC intelligent noise cancellation, blocking environmental noise, clear and noiseless. 3HIGH RESOLUTION SPEAKERS: High resolution speakers with dual front and rear sound cavity structure, feel the rhythm of each note and create a three dimensional shocking sound field. 4PROFESSIONAL TUNING: Wireless neckband headphones are professionally tuned, with loud and clear treble, thick alto and steady lows, and more balanced triple frequencies. 5COMFORTABLE TO WEAR: Magnetic neckband earphone games zero latency, perfect synchronization screen. Skin friendly memory material, comfortable to wear.