Reviews Teaching Frequency Shift System

FINIS Strapless Technique Agility Paddles for Swim Training - Floating

  • LEARN HOW TO IMPROVE YOUR TECHNIQUE: Designed to provide swimmers with instant stroke feedback, even after just one lap!.
  • STRAPLESS DESIGN: Will shift or fall off without proper stroke technique, teaching you to apply positive pressure throughout your stroke.
  • LOW-IMPACT DESIGN: Allows you to build muscle safely with a streamlined thumb hole for proper hand placement.
  • FLOATING MATERIAL: Great for learn-to-swim programs and open water swimming so you won’t lose them.
  • VERSATILE TRAINING TOOL: Helps train proper stroke technique for butterfly, backstroke, breaststroke and freestyle.
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EasyRead Time Teacher Kids Waterproof Watch - Boys & Girls Time Teacher Watch - Kids Analog Watch - 2 Step Time Teacher Kids Watch - 12-24 Hr Rainbow Face & Easy to Read Dial - Navy

  • UNLOCK THE JOY OF LEARNING: EasyRead's Time Teacher waterproof watch is designed to help kids learn how to tell the time in the most effective way possible. With the Time Teaching System, which is quick and easy to pick up! Learning to tell the time is made fun with its two simple steps to tell the time in the “12 or 24 hour” style. Our kids watch is an ideal activity watch that is fully waterproof to 50m and scratch resistant..
  • EASY LEARNING IN NO TIME: Our Time Teaching System makes learning how to tell the time a breeze. Our kids analog watch features a simple 2-step process. Children can easily understand the easy to read dial, and master it in no time. The colourful analogue dial of our children's watch makes it easy to read, and the battery is included so you don’t have to worry about replacing it..
  • BRIGHTLY-COLOURED DIAL: Our childrens watch is comfortable and fun to wear. Each watch features a colourful, engaging dial with a stylish choice of strap colours that children will simply love! With its waterproof and scratch resistant features, your child can wear it anywhere and anytime without any worry or hassle..
  • PRACTICAL & RELIABLE: Parents will love the practicality and reliability of EasyRead's childrens watch. Our girls & b....
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jiaohaowei Human Anatomy Model,PVC Human Lymphatic System Model Kidney with Adrenal Gland Models for Medical Teaching Demonstratio

  • The Human Lymphatic System Model shows the composition and structural characteristics of the lymphatic system..
  • The model is made of food-grade PVC material and has a realistic shape. It is used as a visual presentation tool for display and teaching of human anatomy.
  • Digital signage: We specially designed digital signage with 63 position indicators. It is convenient for you to learn accurately and effectively, better understand and practice, save learning time and improve learning efficiency.
  • The lymphatic system,like the blood circulation system throughout the body,is a reticular fluid system.The system consists of lymphatic vessels,lymphoid organs and lymph fluid.
  • Applicable to schools, hospitals, in physical health teaching, it can be used as a visual aid to teach physical health knowledge to deepen the understanding of human organ structure.
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RECK Club 3000 4000 Watt DJ/Powered PA Speaker System Combo Set with Bluetooth/USB/SD Card/Remote Control (Two 12-Inch Subwoofers and 8X Array Speakers Set)

  • ...nnel mono & stereo inputs (two mono XLR inputs for microphone or line-level source, one stereo 6.35mm input and one stereo RCA input) and one stereo RCA outputs. Individual volume controls and treble/bass control, master volume to set the general volume conveniently..
  • The PA system has 4000 Watt Peak /1000 RMS. Wide frequency response (from 40-20KHz) makes it suitable for amplifying any type of audio including music or vocals. Two rock-solid subwoofers are made of MDF material and reduces resonance for distortion-free and accurate response. Eight tweeters and eight mid-tweeters ensures clear and deep stereo sound..
  • Great for wedding, meeting, speeches, churches, class teaching, gymnastics, conference, home theater, etc. Note: Items are shipped with three packages separately..
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EXMAX UHF-938 UHF Acoustic Transmission Wireless Headset Microphone Audio Tour Guide System for Church Translation Teaching Travel Simultaneous Interpretation Tour (1 Transmitter and 20 Receivers)

  • ...els allow at least 5 groups working simultaneously on different channel ID without interference.Each group uses unique Channel ID and different groups uses different Channel ID.One EX-938T transmitter could pair with many many EX-938R receivers within working distance so long as they are on the same Channel ID. PLL frequency synthesized technology ensures stable and reliable voice transmission performance..
  • 【Easy Operation】AA batteries as power supply,low power consumption design for long working time over 15 hrs,easy operation on battery replacement,no built-in battery makes it conveniently to be taken on flight.EX-938T transmitter has two input jacks, AUX and MIC,AUX is for external audio input, such as music playing from CD or MP3/MP4 player.
  • MIC is for real-time human voice inputting,such as teaching,training, touring,speaking etc.Please don’t mix up the two jacks,otherwise you will get noise..
  • 【Social Distancing Solutions】EX-938 wireless audio voice transmission system makes you heard clearly even 328 feet/100 meters away, giving remote instructions, remaining out of congregate settings, avoiding mass gatherings, and maintaining social distance (at least 6 feet/2 meters) from others when possible. Return to work with confidence. Independe....
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PRORECK Club 3200 12-Inch 4000 Watt DJ/Powered PA Speaker System Combo Set with Bluetooth/USB/SD Card (Two Subwoofers and 8X Array Speakers Set)

  • ...el source, one stereo 6.35mm input and one stereo RCA input) and one stereo RCA outputs. Individual volume controls and treble/bass control, master volume to set the general volume conveniently.
  • ★ WIDE RANGE OF USAGE:The PA system has 4000 Watt Peak /1000 RMS, and can accommodate up to 500 persons and 300 m2. Wide frequency response (from 40-20KHz) makes it suitable for amplifying any type of audio including music or vocals. Great for wedding, meeting, speeches, churches, class teaching, gymnastics, conference, home theater, etc. Easily connect to multiple musical instruments..
  • ★ DEEP & THRILLING STEREO SOUND: Two rock-solid subwoofers are made of MDF material and reduces resonance for distortion-free and accurate response. Eight tweeters and eight mid-tweeters ensures clear and deep stereo sound. Note: Items are shipped with three packages separately..
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Make 1 Million Dollars

  • SUPERIOR SOUND. High-current EI transformer makes sure that sound quality doesn't suffer. Large custom audio capacitors and a discrete output stage..
  • AMP TECHNOLOGY. Wide Range Amplification Technology delivers high-current power stability via large custom capacitors, while low-NFB amps capture depth and spatiality for a wide frequency spectrum with low distortion..
  • AUTHENTIC AUDIO. Direct Mode bypasses tone and PM Bass circuitries. In combination with a refined amp circuit design, signal-pathlengths have been significantly reduced in comparison to the A-9010 for even more accurate and faithful sound..
  • BASS BOOST. Phase Matching Bass Boost eliminates phase-shift between low- and mid-range frequency bands. Bass response is enhanced without compromising vocal clarity, which is especially useful when playing music at low volumes..
  • FEATURES. 50 W + 50 W (4 ohms, 20 hz–20 kHz, 0.9% THD, 2-ch Driven, FTC). Remote controller..
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WATINC 44Pcs Outer Space Felt Story Board Set 3.5 Ft Solar System Universe Storytelling Flannel Interactive Play Kit with Hooks Astronaut Planets Alien Galaxy Reusable Wall Hanging Gift for Boys Girls

  • AMAZING KIT: Giant 3.5 feet solar system felt kit with 39 pieces comfortable size space elements for little hands. The interactive felt play set could be decorated repeatedly. Large felt background piece can be easily hung with included 4 sturdy hooks..
  • GREAT GAME AND TEACHING: It would be a fun artistic expression play kit for whole family. Kids and parents can interact the various solar system elements to create a variety of creative educational scenes. It's a great and fun way to teach the solar system..
  • ATTRACTIVE GALAXY STORY: Planets, asteroids, astronaut, alien, rocket ships, stars and more. Place elements wherever you please to create various space stories. Great for building children's imaginations..
  • WONDERFUL GIFT: Great montessori teaching aid for pre-school teaching and home time. It would be a heart-warming toddler birthday gift..
  • A TIP: When you paste these pre-cut figures on the smooth felt board, you can shake the figures from side to side to make them more firmly..
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2Pcs JSN-SR04T Integrated Ultrasonic Distance Measuring Sensor Transducer Module Waterproof

  • Working voltage:DC3-5.5V, Static current:5mA, Total current work: 30mA. Working range: 25cm-4M, Working frequency: 40KHZ, Detecting angle: 75 degree. The JSN-SR04T ultrasonic distance measuring module provides a measurement range of 21cm-600cm. Blind area is 20cm..
  • Integrated with sealed waterproof stripline probe, this sensor suitable for wet and harsh measurement occasions. Please note that the device is waterproof, but it couldn't work underwater..
  • Small size, easy to use, strong anti-jamming, high accuracy, low voltage and low power consumption. The module has a variety of modes that can be modified manually, suitable for testing and teaching experiments in different occasions..
  • Applications:It is widely used in horizontal distance ranging, obstacle avoidance, object distance measurement, car reversing sensors, security alarms, automatic control, security and industrial control, Intelligent traffic control and artificial intelligence teaching and research etc..
  • Package Included:2 x JSN-SR04T Ultrasonic Distance Measuring Transducer Sensor Waterproof.
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