Wearable Bluetooth-compatible Speaker Hang Neck Wireless Stereo Bass Portable Subwoofer Sound Box 4 Speakers for Sports Game Feature: 1. Chinese and English language switching; 2. IPX4 sweatproof and waterproof; 3. Built-in microphone, high-definition call; 4. Ultra-high sound quality, stereo surround sound; 5. High-fidelity 4 speakers (8 Ohz 1W). Specification: Main body material: ABS Color: black Size: about 180x170x30mm Net weight: about 85g Working time: 10-15 hours Charging time: about 3 hours Speakers: 4 Audio Input: Wireless Working distance: up to 15 meters Battery capacity: 380mAh polymer battery*2 (760mAh in total) Bluetooth-compatible: 5.0 Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.