diff --git a/demo/index.html b/demo/index.html
index e156a10..499da15 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -14,6 +14,9 @@
 
   <body>
     <mb-form>
+      <div>
+        <mb-duration year required label="Duration"></mb-duration>
+      </div>
       <!-- <div>
         <mb-quantity required label="Somrhting"></mb-quantity>
       </div> -->
@@ -26,7 +29,7 @@
         </script>
       </div> -->
 
-      <div>
+      <!-- <div>
         <mb-checkbox
           required
           label="Check that"
@@ -37,8 +40,7 @@
           const check = document.getElementById('checkbox')
           check.data = true
         </script>
-      </div>
-
+      </div> -->
       <!-- <div>
         <mb-select required id="select">
           <mb-option value="mother" label="Mother"></mb-option>
diff --git a/medblocks.ts b/medblocks.ts
index bf1aff4..af79034 100644
--- a/medblocks.ts
+++ b/medblocks.ts
@@ -23,4 +23,5 @@ import './src/medblocks/boolean/checkbox';
 import './src/medblocks/proportion/percent';
 import './src/medblocks/context/checkboxAny';
 import './src/medblocks/text/text-select';
-import './src/medblocks/text/input-multiple';
\ No newline at end of file
+import './src/medblocks/text/input-multiple';
+import './src/medblocks/duration/duration';
\ No newline at end of file
diff --git a/src/medblocks/duration/duration.ts b/src/medblocks/duration/duration.ts
new file mode 100644
index 0000000..a481c68
--- /dev/null
+++ b/src/medblocks/duration/duration.ts
@@ -0,0 +1,133 @@
+import { customElement, html, property, state, css } from 'lit-element';
+import SlInput from '@shoelace-style/shoelace/dist/components/input/input';
+import '@shoelace-style/shoelace/dist/components/input/input';
+import EhrElement from '../EhrElement';
+
+@customElement('mb-duration')
+export default class MbDuration extends EhrElement {
+  static styles = css`
+    div {
+      display: flex;
+      gap: 10px;
+    }
+    .label {
+      font-size: var(--sl-input-label-font-size-medium);
+      display: inline-block;
+      color: var(--sl-input-label-color);
+      margin-bottom: var(--sl-spacing-xxx-small);
+    }
+    sl-input {
+      width: 0;
+      flex: 1 1 auto;
+    }
+  `;
+
+  @property({ type: Boolean, reflect: true }) year: boolean = false;
+  @property({ type: Boolean, reflect: true }) month: boolean = false;
+  @property({ type: Boolean, reflect: true }) week: boolean = false;
+  @property({ type: Boolean, reflect: true }) day: boolean = false;
+  @property({ type: Boolean, reflect: true }) hour: boolean = false;
+  @property({ type: Boolean, reflect: true }) minute: boolean = false;
+  @property({ type: Boolean, reflect: true }) second: boolean = false;
+  @property({ type: Boolean, reflect: true }) required: boolean = false;
+
+  @state() _state : {[period: string]: string | undefined} = {}
+
+  parsePeriod(period: string) {
+    const [periodPart, t] = period.split('T');
+    const p = periodPart.replace('P', '');
+    this._state.year = this.getPart(p, 'Y');
+    this._state.month = this.getPart(p, 'M');
+    this._state.week = this.getPart(p, 'W');
+    this._state.day = this.getPart(p, 'D');
+    if (t) {
+      this._state.hour = this.getPart(t, 'H');
+      this._state.minute = this.getPart(t, 'M');
+      this._state.second = this.getPart(t, 'S');
+    }
+  }
+
+  getPart(periodPart: string, part: string): string | undefined {
+    const myRegexp = new RegExp(`(\\d)${part}`, 'g');
+    const match = myRegexp.exec(periodPart);
+    return match ? match[1] : undefined;
+  }
+
+  serializePeriod(): string {
+    const hour = this._state.hour ? `${this._state.hour}H` : '';
+    const minute = this._state.minute ? `${this._state.minute}M` : '';
+    const second = this._state.second ? `${this._state.second}S` : '';
+    const t = [hour, minute, second].join('');
+
+    const year = this._state.year ? `${this._state.year}Y` : '';
+    const month = this._state.month ? `${this._state.month}M` : '';
+    const week = this._state.week ? `${this._state.week}W` : '';
+    const day = this._state.day ? `${this._state.day}D` : '';
+    const p = [year, month, week, day].join('');
+
+    const timePart = t ? `T${t}` : '';
+    const periodPart = p ? `P${p}` : '';
+
+    return `${periodPart}${timePart}`;
+  }
+
+  get data() {
+    return this.serializePeriod();
+  }
+
+  set data(period: string) {
+    const oldVal = this.data
+    this.parsePeriod(period);
+    this.requestUpdate('data',oldVal)
+  }
+
+  handleInput(value:string,e:CustomEvent){
+    const oldVal = this.data
+    const target = e.target as SlInput;
+    this._state = {...this._state, [value]: target.value};
+    this.requestUpdate('data', oldVal)
+    this._mbInput.emit()
+  }
+
+  formatDuration(value: string) : string {
+      return value.charAt(0).toUpperCase() + value.slice(1)+'s'
+  }
+
+  reportValidity() {
+    if (this.data) {
+      return true
+    } else {
+      const input = this.shadowRoot!.querySelector('sl-input') as SlInput;
+      return input.reportValidity()
+    }
+  }
+  
+  getInputs() {
+    const allDurations: any = {
+      year: this.year, month: this.month, week: this.week,day: this.day, hour: this.hour, minute: this.minute, second: this.second
+    }
+    const durationKeys = Object.keys(allDurations)
+    const toRender =  durationKeys.every(a=>allDurations[a]===false) ? durationKeys : durationKeys
+    .filter(a=>allDurations[a])
+
+    return toRender.map(a=>html`<sl-input
+      id=${a}
+      type="number"
+      ?required=${this.required}
+      help-text=${this.formatDuration(a)}
+      .value=${this._state[a] || ''}
+      @sl-input=${(e: CustomEvent)=>this.handleInput(a,e)}
+      ></sl-input>`)
+  }
+
+  render(){
+    return html`
+    ${this.label
+          ? html`<label part="label" class="label">${this.label}</label>`
+          : null}
+    <div>
+    ${this.getInputs()}
+    </div>
+    `
+  }
+}
\ No newline at end of file
diff --git a/test/mb-duration.test.ts b/test/mb-duration.test.ts
new file mode 100644
index 0000000..30781fb
--- /dev/null
+++ b/test/mb-duration.test.ts
@@ -0,0 +1,38 @@
+import {
+  html,
+  fixture,
+  expect,
+  oneEvent,
+  elementUpdated,
+} from '@open-wc/testing';
+import MbDuration from '../src/medblocks/duration/duration';
+import '../src/medblocks/duration/duration';
+import { querySelectorAllDeep } from 'query-selector-shadow-dom';
+import { SlInput } from '@shoelace-style/shoelace';
+
+describe('MbDuration', () => {
+  it('emits data on input', async () => {
+    const mbDuration = await fixture<MbDuration>(
+      html`<mb-duration year=${true} label="Year"></mb-duration>`
+    );
+    const year = querySelectorAllDeep('input') as SlInput[];
+    setTimeout(() => {
+      year[0].value = '2';
+      year[0].dispatchEvent(new Event('input'));
+    });
+    const event: any = await oneEvent(mbDuration, 'mb-input');
+    expect(event.target.data).to.eq('P2Y');
+  });
+  it('changes input on setting data', async () => {
+    const mbDuration = await fixture<MbDuration>(
+      html`<mb-duration year label="Year"></mb-duration>`
+    );
+    const year = querySelectorAllDeep('input') as SlInput[];
+    setTimeout(()=>{
+        mbDuration.data = 'P3Y';
+    },0)
+    await oneEvent(mbDuration, 'mb-input');
+    await elementUpdated(mbDuration);
+    expect(year[0].value).to.eq('3');
+  });
+});
diff --git a/test/validation-test/duration-validation.test.ts b/test/validation-test/duration-validation.test.ts
new file mode 100644
index 0000000..56c20b6
--- /dev/null
+++ b/test/validation-test/duration-validation.test.ts
@@ -0,0 +1,59 @@
+import '../../medblocks'
+import { expect } from '@open-wc/testing'
+import { elementUpdated, fixture } from '@open-wc/testing-helpers'
+import { html } from 'lit-html'
+import { querySelectorDeep } from 'query-selector-shadow-dom'
+import MbForm from '../../src/medblocks/form/form'
+
+
+
+describe('duration validation test',()=>{
+    it('empty',async ()=>{
+        const form = await fixture<MbForm>(
+            html`
+            <mb-form>
+                <mb-duration year path="test/1"></mb-duration>
+            </mb-form>
+            `
+        )
+        await elementUpdated(form);
+        expect(form.validate()).to.be.true
+    })
+    it('data',async ()=>{
+        const form = await fixture<MbForm>(
+            html`
+            <mb-form>
+                <mb-duration year path="test/1"></mb-duration>
+            </mb-form>
+            `
+        )
+        const duration = querySelectorDeep('mb-duration') as any;
+        duration.data = 'P2Y3MT2H'
+        await elementUpdated(form);
+       expect(form.validate()).to.be.true
+    })
+    it('required but empty',async ()=>{
+        const form = await fixture<MbForm>(
+            html`
+            <mb-form>
+                <mb-duration year required path="test/1"></mb-duration>
+            </mb-form>
+            `
+        )
+        await elementUpdated(form)
+        expect(form.validate()).to.be.false
+    })
+    it('required with data',async ()=>{
+        const form = await fixture<MbForm>(
+            html`
+            <mb-form>
+                <mb-duration year required path="test/1"></mb-duration>
+            </mb-form>
+            `
+        )
+        const duration = querySelectorDeep('mb-duration') as any;
+        duration.data = 'PT2H'
+        await elementUpdated(form)
+        expect(form.validate()).to.be.true
+    })
+})
\ No newline at end of file
diff --git a/test/validation-test/input-multiple-validation.test.ts b/test/validation-test/input-multiple-validation.test.ts
index 427d107..ca91ce0 100644
--- a/test/validation-test/input-multiple-validation.test.ts
+++ b/test/validation-test/input-multiple-validation.test.ts
@@ -28,7 +28,7 @@ describe('input-multiple validation test',()=>{
             `
         )
         const input = querySelectorDeep('mb-input-multiple') as any;
-        input.data = 'testUnit';
+        input.data = ['testUnit'];
         await elementUpdated(form);
        expect(form.validate()).to.be.true
     })
