Bluetooth 5.3 Connectivity Experience seamless audio streaming with the latest Bluetooth 5.3 technology, ensuring stable connections up to 20m. Waterproof Design Enjoy your music in any weather with the speaker's waterproof feature, perfect for outdoor activities. TF Card Slot & Type C Support Expand your music library with the TF card slot or easily charge your device via Type C port. Dual Channel Stereo Sound Immerse yourself in rich, clear sound with dual channel stereo output, enhancing your audio experience. Portable Neckband Speaker The lightweight, wearable neckband design makes it easy to carry around, ideal for on-the-go listening. Rockmia EBS-910 New Wearable Wireless Neckband Speaker Bluetooth 5.3 AAC Code True Wireless Stereo Music Box TF Card Slot Type C Rockmia EBS-910 mini Wearable Wireless Neckband TF card Speaker Bluetooth 5.3 Quality True Wireless Stereo Music Box Bass Type C  Outdoor Waterproof IPX4 Feature: 1.Plastic + Silicon + Fabric cover 2.Around-the-Neck Design 3.Built-in MIC, with handfree(phone) function 4.With 2pcs passive radiators, bass enhanced 5.Built-in mp3 player, can play music from TF card 6.Three-button control lets you make calls, play and pause tracks Specification: Power source: Rechargeable Li Battery(500mAh) Output power: 3W*2 ,Stereo Bluetooth Solution: JL Bluetooth 5.0 Audio Input: Wireless +TF Working distance: Up to 20M Working time: Up to 12 hours Speaker unit: 33mm Charging port: Type C Product size: 208*167*31.5mm Product weight: 156g