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World's Smallest Earbud with 6 Hour Battery NENRENT S570 is designed with size and performance in mind. The lightweight and minimal shape of the S570 earbud creates a perfect fit, so light and discreet you will hardly notice you're wearing it. Not only does the S570 offer a comfortable fit, the earphone also sounds decent and offers 5-6 hours of battery life to get you through a day. *Audio playtime varies according to volume output level (dB) and audio content- a greater output yields a shorter battery life. , tested multiple units with iPhone 6s) Work: Stream music privately and leave 1 ear open to keep aware of your surroundings. Home: Tune in on your favorite podcast while doing chores around the house. Play: Fall asleep watching Netflix without disturbing your partner. (The S570 earpiece will not flash any light once it's on) Wireless Freedom Hear streaming without holding your phone or getting tangled in wires. Pairing To enter pairing mode, Press and Hold Multifunction button until Red and Blue LED flashes alternately (5+ sec), should also hear a Voice Prompt "ready to pair" OR ELSE the earbud is ONLY powered on, NOT in Pairing Mode Keeping it Simple 1 button control to power on/off, pair Bluetooth, play/pause audio, answer/end calls. Specifications: Bluetooth Version: iSSC V4.1 Bluetooth Profile: A2DP, AVRCP, HFP, HSP Range: 33 Feet (10m) Working Time: 5-6 hours for music (40-50% volume) Standby Time:130 hour Charging Time: 1-2 hour Charging Input: USB 5V Dimension (L*W*H): 0.79x 0.57x 0.69 Inch Weight: 0.13 oz Package including: 1x S570 Bluetooth Earbud (Only 1 Earbud and only 2 bud ) 1x USB Charging Cable 1x User Manual