ELEOPTION Waterproof Wireless Bluetooth Speaker Portable V4.0+EDR with Enhanced Bass Sound Sport NFC, TF Card for Outdoor Bike Beach Car etc High Power Enhanced Bass Equipped with dual Powerful 5 watt speakers and dual passive radiators for bass extension, providing all-around stereo and hi-fi sound, far superior to normal speakers in the market. Built-in high sensitivity microphone with HD-Voice and Noise cancellation DSP technology deliv Bluetooth Version V4.0+EDRLatest Advanced Bluetooth version V4.0+EDR with original CSR chipset, more power saving and faster transmission speed, with wireless connection distance up to 33 feet . NFC TechnologyNear Field Communication (NFC) technology allows simple one-touch pairing. Instantly connect portable Bluetooth speaker with NFC-compatible devices for a quick and easy Bluetooth connection. Waterproof &Dustproof & ShockproofIt resist any heavy rainy days, water splash and even the shooting of water cannon from any angle Waterproof, dustproof & shockproof. Support Outdoor SportsSpecially Designed For Outdoor Sports,As an alternative, the 3.5mm Aux can be used as another option for sound output. Support TF card up to 128GB(not included)in MP3 or WMA format. Waterproof, dust-proof and shockproof construction. Bluetooth 4.0Compatible with most Bluetooth-enabled devices. Weather resistant silicone and metal design Built-in power bank. Built-in microphone and call answer button. Two performance drivers, full sound with thunderous bass. Powered by dual 5W 45mm drivers and dual passive radiators to ensure you will never miss any bass voice. Just put your phone chip close to the NFC emblem on the speaker, no need to push any button! Bluetooth Version: V4.0+EDR Transmission Distance: 32 feet Supported profile: HSP/HFP/A2DP/AVRCP/APTX Battery capacity: built-in 5200mAh li-polymer Rated Power: 25W Driver Unit: 45mm2 Operating Time:8 hours Charging Time: 3-4 hours Hands-free, TF card slot, Aux in NFC 1 bluetooth speaker 1 3.5mm audio cable 1 USB charging cable 1 user manual Provides more than 12 hours of wireless audio on a full charge, and can quickly recharge smartphones, MP3 players and other USB-powered devices. listening to your music around the house, shower, beach, camping, hiking, rafting or backyard poolside fun.