describe: The L-938 mini FM radio speaker is specially designed for people who want to listen to radio, weather, and news freely at home. Loud sound and high-fidelity sound quality let you enjoy your favorite music anytime, anywhere. Enjoying music with this versatile stereo digital speaker is really cool and stylish. High fidelity sound quality: The loud sound and high-fidelity sound quality are perfect for seniors. Also suitable for headphones connected to the 3.5mm headphone jack. TF/SD/MMC card U disk: As a speaker, it can play music from TF/SD/MMC cards and USB flash drives. In MP3 mode, when the phone is turned off, the current MP3 can be played the next time it is turned on. [convenient] Featuring a 1.5-inch display and unique plastic buttons, it's user-friendly, durable and environmentally friendly. The lanyard and back clip allow you to carry it on the go. [Endurance time] The replaceable 850mAh battery can also be charged via the included Mini USB charging cable; large battery capacity and long standby time allow you to enjoy music all day long. Specification: Model: L-938 Display: 1.5 inches FM: 87.5MHZ-108MHZ Decoding range: 8-320 Kbps Dynamic range: 92dB Channel separation: 69dB Output power: 3W (maximum) Speaker size: 66mm Output impedance: 4 ohms Signal-to-noise ratio: 87 dB Battery capacity: 850mAh Charging time: about 2-3 hours Item size: approx. 12.5*7.2*3.3cm/4.92*2.83*1.29in Item Weight: Approx. 188 g/6.63 oz Packaging size: approx. 13.1*9.4*3.9cm/5.15*3.70*1.53 inches Packing weight: approx. 232 g/8.20 oz Packing list: 1 piece FM radio speaker